{
  "answerability": "evidence_backed_claims_available",
  "claims": [
    {
      "claim": {
        "claim_id": "claim-emigrant-crabtree-pine-valley-camp",
        "evidence_ids": [
          "evidence-emigrant-crabtree-pine-valley-camp"
        ],
        "predicate": "mapped_route_connector",
        "spatial_scope_ids": [
          "scope-route-segment-emigrant-crabtree-pine-valley-camp"
        ],
        "subject_id": "route-segment-emigrant-crabtree-pine-valley-camp",
        "temporal_scope": null,
        "value": {
          "distance_miles": null,
          "distance_status": "not_printed",
          "end_node_id": "route-node-emigrant-camp-west-approach",
          "precision_note": "Mapped connectivity; no surveyed coordinates. Schematic distance is an estimate, not navigation.",
          "route_role": "official_mainline",
          "start_node_id": "route-node-emigrant-pine-valley-junction"
        }
      },
      "evidence": [
        {
          "claim_id": "claim-emigrant-crabtree-pine-valley-camp",
          "evidence_id": "evidence-emigrant-crabtree-pine-valley-camp",
          "notes": "",
          "observation_id": "observation-emigrant-crabtree-pine-valley-camp",
          "stance": "supports"
        }
      ],
      "observations": [
        {
          "artifact_refs": [],
          "content": "2010 Emigrant Wilderness map, Camp Lake panel: 20E16 continues east from the Pine Valley connection to Camp Lake; the Camp Lake detail map confirms the western trail approach.",
          "observation_id": "observation-emigrant-crabtree-pine-valley-camp",
          "observed_at": null,
          "observer": "Wayproof primary-source text and visual map review",
          "retrieved_at": "2026-10-05T22:52:54+00:00",
          "source_id": "source-usfs-emigrant-overview-map"
        }
      ],
      "sources": [
        {
          "locator": "https://www.fs.usda.gov/sites/nfs/files/legacy-media/stanislaus/Emigrant%20Wilderness%20GEOSPATIAL.pdf",
          "publisher": "USDA Forest Service, Stanislaus National Forest",
          "source_id": "source-usfs-emigrant-overview-map"
        }
      ],
      "subject": {
        "entity_id": "route-segment-emigrant-crabtree-pine-valley-camp",
        "kind": "route_segment",
        "name": "Pine Valley Camp"
      }
    },
    {
      "claim": {
        "claim_id": "claim-emigrant-geometry-pine-valley-camp",
        "evidence_ids": [
          "evidence-emigrant-geometry-pine-valley-camp"
        ],
        "predicate": "reviewed_route_display_geometry",
        "spatial_scope_ids": [
          "scope-route-emigrant-crabtree-camp-lake",
          "scope-route-emigrant-crabtree-bear-lake"
        ],
        "subject_id": "route-segment-emigrant-crabtree-pine-valley-camp",
        "temporal_scope": null,
        "value": {
          "coordinate_reference_system": "EPSG:4326",
          "current_route_status": "unknown; pre-trip check required",
          "distance_policy": "Existing topology claims control mileage; no distance derived from these coordinates.",
          "end_coordinate": {
            "latitude": 38.16518574092221,
            "longitude": -119.88391532965653
          },
          "geometry_snapshot": {
            "feature_id": "usfs-emigrant-pine-valley-camp",
            "path": "geometry/v0/snapshots/usfs-emigrant-crabtree-routes-20261006.geojson",
            "sha256": "33fba5638eb580a602ba16c4bd4dada51a35c696002db839fde0612fb603285d"
          },
          "navigation_grade": false,
          "route_role": "official_mainline",
          "source_coordinate_accuracy": "unknown",
          "source_feature_id": 9428086,
          "source_globalid": "{DD41DD87-9AAE-4FE1-B078-0427EEE709F1}",
          "source_trail_number": "20E16",
          "source_vertex_range_inclusive": [
            67,
            0
          ],
          "start_coordinate": {
            "latitude": 38.165350570701605,
            "longitude": -119.90071919040176
          }
        }
      },
      "evidence": [
        {
          "claim_id": "claim-emigrant-geometry-pine-valley-camp",
          "evidence_id": "evidence-emigrant-geometry-pine-valley-camp",
          "notes": "Wayproof display assignment to already evidenced endpoints; no new topology inferred from proximity.",
          "observation_id": "observation-emigrant-geometry-pine-valley-camp",
          "stance": "supports"
        }
      ],
      "observations": [
        {
          "artifact_refs": [],
          "content": "Public National Forest System Trails layer, feature 9428086, globalid {DD41DD87-9AAE-4FE1-B078-0427EEE709F1}, trail 20E16 CRABTREE: reviewed EPSG:4326 source vertices 67 through 0 are retained for display. Source segment_length 2.232 and gis_miles 2.231 describe the original feature, not a computed length for this slice. Coordinate accuracy and current field condition are not established by retrieval.",
          "observation_id": "observation-emigrant-geometry-pine-valley-camp",
          "observed_at": null,
          "observer": "Wayproof named-feature and official-map review",
          "retrieved_at": "2026-10-06T00:09:34+00:00",
          "source_id": "source-usfs-emigrant-nfs-trail-geometry"
        }
      ],
      "sources": [
        {
          "locator": "https://apps.fs.usda.gov/arcx/rest/services/EDW/EDW_TrailNFSPublish_01/MapServer/0",
          "publisher": "USDA Forest Service",
          "source_id": "source-usfs-emigrant-nfs-trail-geometry"
        }
      ],
      "subject": {
        "entity_id": "route-segment-emigrant-crabtree-pine-valley-camp",
        "kind": "route_segment",
        "name": "Pine Valley Camp"
      }
    }
  ],
  "entity": {
    "entity_id": "route-segment-emigrant-crabtree-pine-valley-camp",
    "kind": "route_segment",
    "name": "Pine Valley Camp"
  },
  "gap_details": [
    {
      "claims": [
        {
          "claim": {
            "claim_id": "claim-emigrant-geometry-bear-spur",
            "evidence_ids": [
              "evidence-emigrant-geometry-bear-spur"
            ],
            "predicate": "reviewed_route_display_geometry",
            "spatial_scope_ids": [
              "scope-route-emigrant-crabtree-bear-lake"
            ],
            "subject_id": "route-segment-emigrant-crabtree-bear-spur",
            "temporal_scope": null,
            "value": {
              "coordinate_reference_system": "EPSG:4326",
              "current_route_status": "unknown; pre-trip check required",
              "distance_policy": "Existing topology claims control mileage; no distance derived from these coordinates.",
              "end_coordinate": {
                "latitude": 38.17439691200468,
                "longitude": -119.86702313700192
              },
              "geometry_snapshot": {
                "feature_id": "usfs-emigrant-bear-spur",
                "path": "geometry/v0/snapshots/usfs-emigrant-crabtree-routes-20261006.geojson",
                "sha256": "33fba5638eb580a602ba16c4bd4dada51a35c696002db839fde0612fb603285d"
              },
              "navigation_grade": false,
              "route_role": "official_mainline",
              "source_coordinate_accuracy": "unknown",
              "source_feature_id": 9430557,
              "source_globalid": "{8497BEEB-8635-4A89-8352-B24C998130DD}",
              "source_trail_number": "19E09",
              "source_vertex_range_inclusive": [
                0,
                164
              ],
              "start_coordinate": {
                "latitude": 38.166155721488686,
                "longitude": -119.87741437071607
              }
            }
          },
          "evidence": [
            {
              "claim_id": "claim-emigrant-geometry-bear-spur",
              "evidence_id": "evidence-emigrant-geometry-bear-spur",
              "notes": "Wayproof display assignment to already evidenced endpoints; no new topology inferred from proximity.",
              "observation_id": "observation-emigrant-geometry-bear-spur",
              "stance": "supports"
            }
          ],
          "observations": [
            {
              "artifact_refs": [],
              "content": "Public National Forest System Trails layer, feature 9430557, globalid {8497BEEB-8635-4A89-8352-B24C998130DD}, trail 19E09 BEAR LAKE: reviewed EPSG:4326 source vertices 0 through 164 are retained for display. Source segment_length 1 and gis_miles 0.9720000000000001 describe the original feature, not a computed length for this slice. Coordinate accuracy and current field condition are not established by retrieval.",
              "observation_id": "observation-emigrant-geometry-bear-spur",
              "observed_at": null,
              "observer": "Wayproof named-feature and official-map review",
              "retrieved_at": "2026-10-06T00:09:34+00:00",
              "source_id": "source-usfs-emigrant-nfs-trail-geometry"
            }
          ],
          "sources": [
            {
              "locator": "https://apps.fs.usda.gov/arcx/rest/services/EDW/EDW_TrailNFSPublish_01/MapServer/0",
              "publisher": "USDA Forest Service",
              "source_id": "source-usfs-emigrant-nfs-trail-geometry"
            }
          ]
        },
        {
          "claim": {
            "claim_id": "claim-emigrant-geometry-camp-bear-junction",
            "evidence_ids": [
              "evidence-emigrant-geometry-camp-bear-junction"
            ],
            "predicate": "reviewed_route_display_geometry",
            "spatial_scope_ids": [
              "scope-route-emigrant-crabtree-bear-lake"
            ],
            "subject_id": "route-segment-emigrant-crabtree-camp-bear-junction",
            "temporal_scope": null,
            "value": {
              "coordinate_reference_system": "EPSG:4326",
              "current_route_status": "unknown; pre-trip check required",
              "distance_policy": "Existing topology claims control mileage; no distance derived from these coordinates.",
              "end_coordinate": {
                "latitude": 38.166155721488686,
                "longitude": -119.87741437071607
              },
              "geometry_snapshot": {
                "feature_id": "usfs-emigrant-camp-bear-junction",
                "path": "geometry/v0/snapshots/usfs-emigrant-crabtree-routes-20261006.geojson",
                "sha256": "33fba5638eb580a602ba16c4bd4dada51a35c696002db839fde0612fb603285d"
              },
              "navigation_grade": false,
              "route_role": "official_mainline",
              "source_coordinate_accuracy": "unknown",
              "source_feature_id": 9430618,
              "source_globalid": "{1D2CDA88-08B4-4846-B5CD-A4ECF893054B}",
              "source_trail_number": "20E16",
              "source_vertex_range_inclusive": [
                836,
                806
              ],
              "start_coordinate": {
                "latitude": 38.16518574092221,
                "longitude": -119.88391532965653
              }
            }
          },
          "evidence": [
            {
              "claim_id": "claim-emigrant-geometry-camp-bear-junction",
              "evidence_id": "evidence-emigrant-geometry-camp-bear-junction",
              "notes": "Wayproof display assignment to already evidenced endpoints; no new topology inferred from proximity.",
              "observation_id": "observation-emigrant-geometry-camp-bear-junction",
              "stance": "supports"
            }
          ],
          "observations": [
            {
              "artifact_refs": [],
              "content": "Public National Forest System Trails layer, feature 9430618, globalid {1D2CDA88-08B4-4846-B5CD-A4ECF893054B}, trail 20E16 CRABTREE: reviewed EPSG:4326 source vertices 836 through 806 are retained for display. Source segment_length 10.1 and gis_miles 9.942 describe the original feature, not a computed length for this slice. Coordinate accuracy and current field condition are not established by retrieval.",
              "observation_id": "observation-emigrant-geometry-camp-bear-junction",
              "observed_at": null,
              "observer": "Wayproof named-feature and official-map review",
              "retrieved_at": "2026-10-06T00:09:34+00:00",
              "source_id": "source-usfs-emigrant-nfs-trail-geometry"
            }
          ],
          "sources": [
            {
              "locator": "https://apps.fs.usda.gov/arcx/rest/services/EDW/EDW_TrailNFSPublish_01/MapServer/0",
              "publisher": "USDA Forest Service",
              "source_id": "source-usfs-emigrant-nfs-trail-geometry"
            }
          ]
        },
        {
          "claim": {
            "claim_id": "claim-emigrant-geometry-lake-valley-pine-valley",
            "evidence_ids": [
              "evidence-emigrant-geometry-lake-valley-pine-valley"
            ],
            "predicate": "reviewed_route_display_geometry",
            "spatial_scope_ids": [
              "scope-route-emigrant-crabtree-camp-lake",
              "scope-route-emigrant-crabtree-bear-lake"
            ],
            "subject_id": "route-segment-emigrant-crabtree-lake-valley-pine-valley",
            "temporal_scope": null,
            "value": {
              "coordinate_reference_system": "EPSG:4326",
              "current_route_status": "unknown; pre-trip check required",
              "distance_policy": "Existing topology claims control mileage; no distance derived from these coordinates.",
              "end_coordinate": {
                "latitude": 38.165350570701605,
                "longitude": -119.90071919040176
              },
              "geometry_snapshot": {
                "feature_id": "usfs-emigrant-lake-valley-pine-valley",
                "path": "geometry/v0/snapshots/usfs-emigrant-crabtree-routes-20261006.geojson",
                "sha256": "33fba5638eb580a602ba16c4bd4dada51a35c696002db839fde0612fb603285d"
              },
              "navigation_grade": false,
              "route_role": "official_mainline",
              "source_coordinate_accuracy": "unknown",
              "source_feature_id": 9428086,
              "source_globalid": "{DD41DD87-9AAE-4FE1-B078-0427EEE709F1}",
              "source_trail_number": "20E16",
              "source_vertex_range_inclusive": [
                172,
                67
              ],
              "start_coordinate": {
                "latitude": 38.17758396939358,
                "longitude": -119.90646170977695
              }
            }
          },
          "evidence": [
            {
              "claim_id": "claim-emigrant-geometry-lake-valley-pine-valley",
              "evidence_id": "evidence-emigrant-geometry-lake-valley-pine-valley",
              "notes": "Wayproof display assignment to already evidenced endpoints; no new topology inferred from proximity.",
              "observation_id": "observation-emigrant-geometry-lake-valley-pine-valley",
              "stance": "supports"
            }
          ],
          "observations": [
            {
              "artifact_refs": [],
              "content": "Public National Forest System Trails layer, feature 9428086, globalid {DD41DD87-9AAE-4FE1-B078-0427EEE709F1}, trail 20E16 CRABTREE: reviewed EPSG:4326 source vertices 172 through 67 are retained for display. Source segment_length 2.232 and gis_miles 2.231 describe the original feature, not a computed length for this slice. Coordinate accuracy and current field condition are not established by retrieval.",
              "observation_id": "observation-emigrant-geometry-lake-valley-pine-valley",
              "observed_at": null,
              "observer": "Wayproof named-feature and official-map review",
              "retrieved_at": "2026-10-06T00:09:34+00:00",
              "source_id": "source-usfs-emigrant-nfs-trail-geometry"
            }
          ],
          "sources": [
            {
              "locator": "https://apps.fs.usda.gov/arcx/rest/services/EDW/EDW_TrailNFSPublish_01/MapServer/0",
              "publisher": "USDA Forest Service",
              "source_id": "source-usfs-emigrant-nfs-trail-geometry"
            }
          ]
        },
        {
          "claim": {
            "claim_id": "claim-emigrant-geometry-pine-valley-camp",
            "evidence_ids": [
              "evidence-emigrant-geometry-pine-valley-camp"
            ],
            "predicate": "reviewed_route_display_geometry",
            "spatial_scope_ids": [
              "scope-route-emigrant-crabtree-camp-lake",
              "scope-route-emigrant-crabtree-bear-lake"
            ],
            "subject_id": "route-segment-emigrant-crabtree-pine-valley-camp",
            "temporal_scope": null,
            "value": {
              "coordinate_reference_system": "EPSG:4326",
              "current_route_status": "unknown; pre-trip check required",
              "distance_policy": "Existing topology claims control mileage; no distance derived from these coordinates.",
              "end_coordinate": {
                "latitude": 38.16518574092221,
                "longitude": -119.88391532965653
              },
              "geometry_snapshot": {
                "feature_id": "usfs-emigrant-pine-valley-camp",
                "path": "geometry/v0/snapshots/usfs-emigrant-crabtree-routes-20261006.geojson",
                "sha256": "33fba5638eb580a602ba16c4bd4dada51a35c696002db839fde0612fb603285d"
              },
              "navigation_grade": false,
              "route_role": "official_mainline",
              "source_coordinate_accuracy": "unknown",
              "source_feature_id": 9428086,
              "source_globalid": "{DD41DD87-9AAE-4FE1-B078-0427EEE709F1}",
              "source_trail_number": "20E16",
              "source_vertex_range_inclusive": [
                67,
                0
              ],
              "start_coordinate": {
                "latitude": 38.165350570701605,
                "longitude": -119.90071919040176
              }
            }
          },
          "evidence": [
            {
              "claim_id": "claim-emigrant-geometry-pine-valley-camp",
              "evidence_id": "evidence-emigrant-geometry-pine-valley-camp",
              "notes": "Wayproof display assignment to already evidenced endpoints; no new topology inferred from proximity.",
              "observation_id": "observation-emigrant-geometry-pine-valley-camp",
              "stance": "supports"
            }
          ],
          "observations": [
            {
              "artifact_refs": [],
              "content": "Public National Forest System Trails layer, feature 9428086, globalid {DD41DD87-9AAE-4FE1-B078-0427EEE709F1}, trail 20E16 CRABTREE: reviewed EPSG:4326 source vertices 67 through 0 are retained for display. Source segment_length 2.232 and gis_miles 2.231 describe the original feature, not a computed length for this slice. Coordinate accuracy and current field condition are not established by retrieval.",
              "observation_id": "observation-emigrant-geometry-pine-valley-camp",
              "observed_at": null,
              "observer": "Wayproof named-feature and official-map review",
              "retrieved_at": "2026-10-06T00:09:34+00:00",
              "source_id": "source-usfs-emigrant-nfs-trail-geometry"
            }
          ],
          "sources": [
            {
              "locator": "https://apps.fs.usda.gov/arcx/rest/services/EDW/EDW_TrailNFSPublish_01/MapServer/0",
              "publisher": "USDA Forest Service",
              "source_id": "source-usfs-emigrant-nfs-trail-geometry"
            }
          ]
        },
        {
          "claim": {
            "claim_id": "claim-emigrant-geometry-start-lake-valley",
            "evidence_ids": [
              "evidence-emigrant-geometry-start-lake-valley"
            ],
            "predicate": "reviewed_route_display_geometry",
            "spatial_scope_ids": [
              "scope-route-emigrant-crabtree-camp-lake",
              "scope-route-emigrant-crabtree-bear-lake"
            ],
            "subject_id": "route-segment-emigrant-crabtree-start-lake-valley",
            "temporal_scope": null,
            "value": {
              "coordinate_reference_system": "EPSG:4326",
              "current_route_status": "unknown; pre-trip check required",
              "distance_policy": "Existing topology claims control mileage; no distance derived from these coordinates.",
              "end_coordinate": {
                "latitude": 38.17758396939358,
                "longitude": -119.90646170977695
              },
              "geometry_snapshot": {
                "feature_id": "usfs-emigrant-start-lake-valley",
                "path": "geometry/v0/snapshots/usfs-emigrant-crabtree-routes-20261006.geojson",
                "sha256": "33fba5638eb580a602ba16c4bd4dada51a35c696002db839fde0612fb603285d"
              },
              "navigation_grade": false,
              "route_role": "official_mainline",
              "source_coordinate_accuracy": "unknown",
              "source_feature_id": 9428086,
              "source_globalid": "{DD41DD87-9AAE-4FE1-B078-0427EEE709F1}",
              "source_trail_number": "20E16",
              "source_vertex_range_inclusive": [
                182,
                172
              ],
              "start_coordinate": {
                "latitude": 38.178658657463544,
                "longitude": -119.9068410709654
              }
            }
          },
          "evidence": [
            {
              "claim_id": "claim-emigrant-geometry-start-lake-valley",
              "evidence_id": "evidence-emigrant-geometry-start-lake-valley",
              "notes": "Wayproof display assignment to already evidenced endpoints; no new topology inferred from proximity.",
              "observation_id": "observation-emigrant-geometry-start-lake-valley",
              "stance": "supports"
            }
          ],
          "observations": [
            {
              "artifact_refs": [],
              "content": "Public National Forest System Trails layer, feature 9428086, globalid {DD41DD87-9AAE-4FE1-B078-0427EEE709F1}, trail 20E16 CRABTREE: reviewed EPSG:4326 source vertices 182 through 172 are retained for display. Source segment_length 2.232 and gis_miles 2.231 describe the original feature, not a computed length for this slice. Coordinate accuracy and current field condition are not established by retrieval.",
              "observation_id": "observation-emigrant-geometry-start-lake-valley",
              "observed_at": null,
              "observer": "Wayproof named-feature and official-map review",
              "retrieved_at": "2026-10-06T00:09:34+00:00",
              "source_id": "source-usfs-emigrant-nfs-trail-geometry"
            }
          ],
          "sources": [
            {
              "locator": "https://apps.fs.usda.gov/arcx/rest/services/EDW/EDW_TrailNFSPublish_01/MapServer/0",
              "publisher": "USDA Forest Service",
              "source_id": "source-usfs-emigrant-nfs-trail-geometry"
            }
          ]
        }
      ],
      "entities": [
        {
          "entity_id": "route-emigrant-crabtree-bear-lake",
          "kind": "route",
          "name": "Crabtree to Bear Lake"
        },
        {
          "entity_id": "route-emigrant-crabtree-camp-lake",
          "kind": "route",
          "name": "Crabtree to Camp Lake"
        },
        {
          "entity_id": "route-segment-emigrant-crabtree-bear-spur",
          "kind": "route_segment",
          "name": "Bear Spur"
        },
        {
          "entity_id": "route-segment-emigrant-crabtree-camp-bear-junction",
          "kind": "route_segment",
          "name": "Camp Bear Junction"
        },
        {
          "entity_id": "route-segment-emigrant-crabtree-lake-valley-pine-valley",
          "kind": "route_segment",
          "name": "Lake Valley Pine Valley"
        },
        {
          "entity_id": "route-segment-emigrant-crabtree-pine-valley-camp",
          "kind": "route_segment",
          "name": "Pine Valley Camp"
        },
        {
          "entity_id": "route-segment-emigrant-crabtree-start-lake-valley",
          "kind": "route_segment",
          "name": "Start Lake Valley"
        }
      ],
      "history": [
        {
          "action": "REPLACE",
          "change_set_id": "wp-20261006-emigrant-completion",
          "evidence_refs": [],
          "knowledge_gap_refs": [
            "gap-emigrant-crabtree-geometry-limitations"
          ],
          "path": "canonical/v0/gaps/gap-emigrant-crabtree-geometry-limitations.json",
          "reason": "Add combined southern approaches, boundary, entry-policy and facility audit; preserve uncertainty.",
          "record_id": "gap-emigrant-crabtree-geometry-limitations",
          "record_type": "gap",
          "summary": "Combine five southern/eastern Emigrant approaches with reviewed boundary, jurisdiction-specific planning and campground/operator inventory audit."
        },
        {
          "action": "ADD",
          "change_set_id": "wp-20261006-emigrant-crabtree-geometry",
          "evidence_refs": [],
          "knowledge_gap_refs": [],
          "path": "canonical/v0/gaps/gap-emigrant-crabtree-geometry-limitations.json",
          "reason": "Attach reviewed federal display geometry without changing graph or mileage.",
          "record_id": "gap-emigrant-crabtree-geometry-limitations",
          "record_type": "gap",
          "summary": "Make the existing Crabtree lake approaches geographically drawable with reviewed USFS vertices and explicit display limits."
        },
        {
          "action": "REPLACE",
          "change_set_id": "wp-20261006-emigrant-western-coverage",
          "evidence_refs": [],
          "knowledge_gap_refs": [
            "gap-emigrant-crabtree-geometry-limitations"
          ],
          "path": "canonical/v0/gaps/gap-emigrant-crabtree-geometry-limitations.json",
          "reason": "Add bounded western approach, geometry and facility evidence; retain unresolved planning limits.",
          "record_id": "gap-emigrant-crabtree-geometry-limitations",
          "record_type": "gap",
          "summary": "Add six drawable western Emigrant approaches with shared physical segments, lake camping evidence and historical trailhead facilities."
        }
      ],
      "navigation": {
        "next_id": "gap-emigrant-crabtree-junction-mileage",
        "position": 171,
        "previous_id": "gap-emigrant-crabtree-camp-mileage",
        "total": 299
      },
      "observations": [
        {
          "artifact_refs": [],
          "content": "Public National Forest System Trails layer, feature 9430557, globalid {8497BEEB-8635-4A89-8352-B24C998130DD}, trail 19E09 BEAR LAKE: reviewed EPSG:4326 source vertices 0 through 164 are retained for display. Source segment_length 1 and gis_miles 0.9720000000000001 describe the original feature, not a computed length for this slice. Coordinate accuracy and current field condition are not established by retrieval.",
          "observation_id": "observation-emigrant-geometry-bear-spur",
          "observed_at": null,
          "observer": "Wayproof named-feature and official-map review",
          "retrieved_at": "2026-10-06T00:09:34+00:00",
          "source_id": "source-usfs-emigrant-nfs-trail-geometry"
        },
        {
          "artifact_refs": [],
          "content": "Public National Forest System Trails layer, feature 9430618, globalid {1D2CDA88-08B4-4846-B5CD-A4ECF893054B}, trail 20E16 CRABTREE: reviewed EPSG:4326 source vertices 836 through 806 are retained for display. Source segment_length 10.1 and gis_miles 9.942 describe the original feature, not a computed length for this slice. Coordinate accuracy and current field condition are not established by retrieval.",
          "observation_id": "observation-emigrant-geometry-camp-bear-junction",
          "observed_at": null,
          "observer": "Wayproof named-feature and official-map review",
          "retrieved_at": "2026-10-06T00:09:34+00:00",
          "source_id": "source-usfs-emigrant-nfs-trail-geometry"
        },
        {
          "artifact_refs": [],
          "content": "Public National Forest System Trails layer, feature 9428086, globalid {DD41DD87-9AAE-4FE1-B078-0427EEE709F1}, trail 20E16 CRABTREE: reviewed EPSG:4326 source vertices 172 through 67 are retained for display. Source segment_length 2.232 and gis_miles 2.231 describe the original feature, not a computed length for this slice. Coordinate accuracy and current field condition are not established by retrieval.",
          "observation_id": "observation-emigrant-geometry-lake-valley-pine-valley",
          "observed_at": null,
          "observer": "Wayproof named-feature and official-map review",
          "retrieved_at": "2026-10-06T00:09:34+00:00",
          "source_id": "source-usfs-emigrant-nfs-trail-geometry"
        },
        {
          "artifact_refs": [],
          "content": "Public National Forest System Trails layer, feature 9428086, globalid {DD41DD87-9AAE-4FE1-B078-0427EEE709F1}, trail 20E16 CRABTREE: reviewed EPSG:4326 source vertices 67 through 0 are retained for display. Source segment_length 2.232 and gis_miles 2.231 describe the original feature, not a computed length for this slice. Coordinate accuracy and current field condition are not established by retrieval.",
          "observation_id": "observation-emigrant-geometry-pine-valley-camp",
          "observed_at": null,
          "observer": "Wayproof named-feature and official-map review",
          "retrieved_at": "2026-10-06T00:09:34+00:00",
          "source_id": "source-usfs-emigrant-nfs-trail-geometry"
        },
        {
          "artifact_refs": [],
          "content": "Public National Forest System Trails layer, feature 9428086, globalid {DD41DD87-9AAE-4FE1-B078-0427EEE709F1}, trail 20E16 CRABTREE: reviewed EPSG:4326 source vertices 182 through 172 are retained for display. Source segment_length 2.232 and gis_miles 2.231 describe the original feature, not a computed length for this slice. Coordinate accuracy and current field condition are not established by retrieval.",
          "observation_id": "observation-emigrant-geometry-start-lake-valley",
          "observed_at": null,
          "observer": "Wayproof named-feature and official-map review",
          "retrieved_at": "2026-10-06T00:09:34+00:00",
          "source_id": "source-usfs-emigrant-nfs-trail-geometry"
        }
      ],
      "record": {
        "gap_id": "gap-emigrant-crabtree-geometry-limitations",
        "question": "What does the Crabtree route display geometry establish?",
        "reason": "Camp western access remains a descriptive source-feature break, not a lake centroid or campsite. Reviewed Crabtree display geometry and Emigrant PAD-US boundary are published. Source accuracy, current trail alignment and conditions remain unknown; unsnapped Lake Valley mismatch, unreviewed branches, parking/facility connectors and navigation-grade survey remain unresolved.",
        "related_ids": [
          "claim-emigrant-geometry-start-lake-valley",
          "claim-emigrant-geometry-lake-valley-pine-valley",
          "claim-emigrant-geometry-pine-valley-camp",
          "claim-emigrant-geometry-camp-bear-junction",
          "claim-emigrant-geometry-bear-spur",
          "route-emigrant-crabtree-camp-lake",
          "route-emigrant-crabtree-bear-lake"
        ]
      },
      "record_type": "gap",
      "related_records": [
        {
          "record": {
            "claim_id": "claim-emigrant-geometry-start-lake-valley",
            "evidence_ids": [
              "evidence-emigrant-geometry-start-lake-valley"
            ],
            "predicate": "reviewed_route_display_geometry",
            "spatial_scope_ids": [
              "scope-route-emigrant-crabtree-camp-lake",
              "scope-route-emigrant-crabtree-bear-lake"
            ],
            "subject_id": "route-segment-emigrant-crabtree-start-lake-valley",
            "temporal_scope": null,
            "value": {
              "coordinate_reference_system": "EPSG:4326",
              "current_route_status": "unknown; pre-trip check required",
              "distance_policy": "Existing topology claims control mileage; no distance derived from these coordinates.",
              "end_coordinate": {
                "latitude": 38.17758396939358,
                "longitude": -119.90646170977695
              },
              "geometry_snapshot": {
                "feature_id": "usfs-emigrant-start-lake-valley",
                "path": "geometry/v0/snapshots/usfs-emigrant-crabtree-routes-20261006.geojson",
                "sha256": "33fba5638eb580a602ba16c4bd4dada51a35c696002db839fde0612fb603285d"
              },
              "navigation_grade": false,
              "route_role": "official_mainline",
              "source_coordinate_accuracy": "unknown",
              "source_feature_id": 9428086,
              "source_globalid": "{DD41DD87-9AAE-4FE1-B078-0427EEE709F1}",
              "source_trail_number": "20E16",
              "source_vertex_range_inclusive": [
                182,
                172
              ],
              "start_coordinate": {
                "latitude": 38.178658657463544,
                "longitude": -119.9068410709654
              }
            }
          },
          "record_id": "claim-emigrant-geometry-start-lake-valley",
          "record_type": "claim"
        },
        {
          "record": {
            "claim_id": "claim-emigrant-geometry-lake-valley-pine-valley",
            "evidence_ids": [
              "evidence-emigrant-geometry-lake-valley-pine-valley"
            ],
            "predicate": "reviewed_route_display_geometry",
            "spatial_scope_ids": [
              "scope-route-emigrant-crabtree-camp-lake",
              "scope-route-emigrant-crabtree-bear-lake"
            ],
            "subject_id": "route-segment-emigrant-crabtree-lake-valley-pine-valley",
            "temporal_scope": null,
            "value": {
              "coordinate_reference_system": "EPSG:4326",
              "current_route_status": "unknown; pre-trip check required",
              "distance_policy": "Existing topology claims control mileage; no distance derived from these coordinates.",
              "end_coordinate": {
                "latitude": 38.165350570701605,
                "longitude": -119.90071919040176
              },
              "geometry_snapshot": {
                "feature_id": "usfs-emigrant-lake-valley-pine-valley",
                "path": "geometry/v0/snapshots/usfs-emigrant-crabtree-routes-20261006.geojson",
                "sha256": "33fba5638eb580a602ba16c4bd4dada51a35c696002db839fde0612fb603285d"
              },
              "navigation_grade": false,
              "route_role": "official_mainline",
              "source_coordinate_accuracy": "unknown",
              "source_feature_id": 9428086,
              "source_globalid": "{DD41DD87-9AAE-4FE1-B078-0427EEE709F1}",
              "source_trail_number": "20E16",
              "source_vertex_range_inclusive": [
                172,
                67
              ],
              "start_coordinate": {
                "latitude": 38.17758396939358,
                "longitude": -119.90646170977695
              }
            }
          },
          "record_id": "claim-emigrant-geometry-lake-valley-pine-valley",
          "record_type": "claim"
        },
        {
          "record": {
            "claim_id": "claim-emigrant-geometry-pine-valley-camp",
            "evidence_ids": [
              "evidence-emigrant-geometry-pine-valley-camp"
            ],
            "predicate": "reviewed_route_display_geometry",
            "spatial_scope_ids": [
              "scope-route-emigrant-crabtree-camp-lake",
              "scope-route-emigrant-crabtree-bear-lake"
            ],
            "subject_id": "route-segment-emigrant-crabtree-pine-valley-camp",
            "temporal_scope": null,
            "value": {
              "coordinate_reference_system": "EPSG:4326",
              "current_route_status": "unknown; pre-trip check required",
              "distance_policy": "Existing topology claims control mileage; no distance derived from these coordinates.",
              "end_coordinate": {
                "latitude": 38.16518574092221,
                "longitude": -119.88391532965653
              },
              "geometry_snapshot": {
                "feature_id": "usfs-emigrant-pine-valley-camp",
                "path": "geometry/v0/snapshots/usfs-emigrant-crabtree-routes-20261006.geojson",
                "sha256": "33fba5638eb580a602ba16c4bd4dada51a35c696002db839fde0612fb603285d"
              },
              "navigation_grade": false,
              "route_role": "official_mainline",
              "source_coordinate_accuracy": "unknown",
              "source_feature_id": 9428086,
              "source_globalid": "{DD41DD87-9AAE-4FE1-B078-0427EEE709F1}",
              "source_trail_number": "20E16",
              "source_vertex_range_inclusive": [
                67,
                0
              ],
              "start_coordinate": {
                "latitude": 38.165350570701605,
                "longitude": -119.90071919040176
              }
            }
          },
          "record_id": "claim-emigrant-geometry-pine-valley-camp",
          "record_type": "claim"
        },
        {
          "record": {
            "claim_id": "claim-emigrant-geometry-camp-bear-junction",
            "evidence_ids": [
              "evidence-emigrant-geometry-camp-bear-junction"
            ],
            "predicate": "reviewed_route_display_geometry",
            "spatial_scope_ids": [
              "scope-route-emigrant-crabtree-bear-lake"
            ],
            "subject_id": "route-segment-emigrant-crabtree-camp-bear-junction",
            "temporal_scope": null,
            "value": {
              "coordinate_reference_system": "EPSG:4326",
              "current_route_status": "unknown; pre-trip check required",
              "distance_policy": "Existing topology claims control mileage; no distance derived from these coordinates.",
              "end_coordinate": {
                "latitude": 38.166155721488686,
                "longitude": -119.87741437071607
              },
              "geometry_snapshot": {
                "feature_id": "usfs-emigrant-camp-bear-junction",
                "path": "geometry/v0/snapshots/usfs-emigrant-crabtree-routes-20261006.geojson",
                "sha256": "33fba5638eb580a602ba16c4bd4dada51a35c696002db839fde0612fb603285d"
              },
              "navigation_grade": false,
              "route_role": "official_mainline",
              "source_coordinate_accuracy": "unknown",
              "source_feature_id": 9430618,
              "source_globalid": "{1D2CDA88-08B4-4846-B5CD-A4ECF893054B}",
              "source_trail_number": "20E16",
              "source_vertex_range_inclusive": [
                836,
                806
              ],
              "start_coordinate": {
                "latitude": 38.16518574092221,
                "longitude": -119.88391532965653
              }
            }
          },
          "record_id": "claim-emigrant-geometry-camp-bear-junction",
          "record_type": "claim"
        },
        {
          "record": {
            "claim_id": "claim-emigrant-geometry-bear-spur",
            "evidence_ids": [
              "evidence-emigrant-geometry-bear-spur"
            ],
            "predicate": "reviewed_route_display_geometry",
            "spatial_scope_ids": [
              "scope-route-emigrant-crabtree-bear-lake"
            ],
            "subject_id": "route-segment-emigrant-crabtree-bear-spur",
            "temporal_scope": null,
            "value": {
              "coordinate_reference_system": "EPSG:4326",
              "current_route_status": "unknown; pre-trip check required",
              "distance_policy": "Existing topology claims control mileage; no distance derived from these coordinates.",
              "end_coordinate": {
                "latitude": 38.17439691200468,
                "longitude": -119.86702313700192
              },
              "geometry_snapshot": {
                "feature_id": "usfs-emigrant-bear-spur",
                "path": "geometry/v0/snapshots/usfs-emigrant-crabtree-routes-20261006.geojson",
                "sha256": "33fba5638eb580a602ba16c4bd4dada51a35c696002db839fde0612fb603285d"
              },
              "navigation_grade": false,
              "route_role": "official_mainline",
              "source_coordinate_accuracy": "unknown",
              "source_feature_id": 9430557,
              "source_globalid": "{8497BEEB-8635-4A89-8352-B24C998130DD}",
              "source_trail_number": "19E09",
              "source_vertex_range_inclusive": [
                0,
                164
              ],
              "start_coordinate": {
                "latitude": 38.166155721488686,
                "longitude": -119.87741437071607
              }
            }
          },
          "record_id": "claim-emigrant-geometry-bear-spur",
          "record_type": "claim"
        },
        {
          "record": {
            "entity_id": "route-emigrant-crabtree-camp-lake",
            "kind": "route",
            "name": "Crabtree to Camp Lake"
          },
          "record_id": "route-emigrant-crabtree-camp-lake",
          "record_type": "entity"
        },
        {
          "record": {
            "entity_id": "route-emigrant-crabtree-bear-lake",
            "kind": "route",
            "name": "Crabtree to Bear Lake"
          },
          "record_id": "route-emigrant-crabtree-bear-lake",
          "record_type": "entity"
        }
      ],
      "sources": [
        {
          "locator": "https://apps.fs.usda.gov/arcx/rest/services/EDW/EDW_TrailNFSPublish_01/MapServer/0",
          "publisher": "USDA Forest Service",
          "source_id": "source-usfs-emigrant-nfs-trail-geometry"
        }
      ]
    }
  ],
  "history": [
    {
      "action": "ADD",
      "change_set_id": "wp-20261005-emigrant-crabtree-lakes",
      "evidence_refs": [],
      "knowledge_gap_refs": [],
      "path": "canonical/v0/entities/route-segment-emigrant-crabtree-pine-valley-camp.json",
      "reason": "Add bounded Crabtree lake approaches while preserving map precision and unresolved coverage.",
      "record_id": "route-segment-emigrant-crabtree-pine-valley-camp",
      "record_type": "entity",
      "summary": "Model shared Crabtree approaches to Camp and Bear lakes with conflicting mileage reports and lake camping rechecks."
    },
    {
      "action": "ADD",
      "change_set_id": "wp-20261005-emigrant-crabtree-lakes",
      "evidence_refs": [
        "evidence-emigrant-crabtree-pine-valley-camp"
      ],
      "knowledge_gap_refs": [],
      "path": "canonical/v0/claims/claim-emigrant-crabtree-pine-valley-camp.json",
      "reason": "Add bounded Crabtree lake approaches while preserving map precision and unresolved coverage.",
      "record_id": "claim-emigrant-crabtree-pine-valley-camp",
      "record_type": "claim",
      "summary": "Model shared Crabtree approaches to Camp and Bear lakes with conflicting mileage reports and lake camping rechecks."
    },
    {
      "action": "ADD",
      "change_set_id": "wp-20261006-emigrant-crabtree-geometry",
      "evidence_refs": [
        "evidence-emigrant-geometry-pine-valley-camp"
      ],
      "knowledge_gap_refs": [],
      "path": "canonical/v0/claims/claim-emigrant-geometry-pine-valley-camp.json",
      "reason": "Attach reviewed federal display geometry without changing graph or mileage.",
      "record_id": "claim-emigrant-geometry-pine-valley-camp",
      "record_type": "claim",
      "summary": "Make the existing Crabtree lake approaches geographically drawable with reviewed USFS vertices and explicit display limits."
    }
  ],
  "journey": [],
  "knowledge_gaps": [
    {
      "gap_id": "gap-emigrant-crabtree-geometry-limitations",
      "question": "What does the Crabtree route display geometry establish?",
      "reason": "Camp western access remains a descriptive source-feature break, not a lake centroid or campsite. Reviewed Crabtree display geometry and Emigrant PAD-US boundary are published. Source accuracy, current trail alignment and conditions remain unknown; unsnapped Lake Valley mismatch, unreviewed branches, parking/facility connectors and navigation-grade survey remain unresolved.",
      "related_ids": [
        "claim-emigrant-geometry-start-lake-valley",
        "claim-emigrant-geometry-lake-valley-pine-valley",
        "claim-emigrant-geometry-pine-valley-camp",
        "claim-emigrant-geometry-camp-bear-junction",
        "claim-emigrant-geometry-bear-spur",
        "route-emigrant-crabtree-camp-lake",
        "route-emigrant-crabtree-bear-lake"
      ]
    }
  ],
  "reference_evidence": [],
  "relationships": [
    {
      "evidence_ids": [
        "evidence-emigrant-crabtree-pine-valley-camp",
        "evidence-emigrant-crabtree-camp-identity"
      ],
      "object_id": "route-node-emigrant-camp-west-approach",
      "predicate": "ends_at",
      "relationship_id": "relationship-emigrant-crabtree-pine-valley-camp-end",
      "subject_id": "route-segment-emigrant-crabtree-pine-valley-camp",
      "temporal_scope": null
    },
    {
      "evidence_ids": [
        "evidence-emigrant-crabtree-pine-valley-camp",
        "evidence-emigrant-crabtree-camp-identity"
      ],
      "object_id": "route-emigrant-crabtree-bear-lake",
      "predicate": "part_of",
      "relationship_id": "relationship-emigrant-crabtree-pine-valley-camp-bear",
      "subject_id": "route-segment-emigrant-crabtree-pine-valley-camp",
      "temporal_scope": null
    },
    {
      "evidence_ids": [
        "evidence-emigrant-crabtree-pine-valley-camp",
        "evidence-emigrant-crabtree-camp-identity"
      ],
      "object_id": "route-emigrant-crabtree-camp-lake",
      "predicate": "part_of",
      "relationship_id": "relationship-emigrant-crabtree-pine-valley-camp-camp",
      "subject_id": "route-segment-emigrant-crabtree-pine-valley-camp",
      "temporal_scope": null
    },
    {
      "evidence_ids": [
        "evidence-emigrant-western-crabtree-gem-profile"
      ],
      "object_id": "route-emigrant-crabtree-gem-lake",
      "predicate": "part_of",
      "relationship_id": "relationship-emigrant-western-crabtree-gem-route-segment-emigrant-crabtree-pine-valley-camp",
      "subject_id": "route-segment-emigrant-crabtree-pine-valley-camp",
      "temporal_scope": null
    },
    {
      "evidence_ids": [
        "evidence-emigrant-crabtree-pine-valley-camp",
        "evidence-emigrant-crabtree-camp-identity"
      ],
      "object_id": "waterbody-emigrant-camp-lake",
      "predicate": "provides_access_to",
      "relationship_id": "relationship-emigrant-crabtree-pine-valley-camp-resource",
      "subject_id": "route-segment-emigrant-crabtree-pine-valley-camp",
      "temporal_scope": null
    },
    {
      "evidence_ids": [
        "evidence-emigrant-crabtree-pine-valley-camp",
        "evidence-emigrant-crabtree-camp-identity"
      ],
      "object_id": "route-node-emigrant-pine-valley-junction",
      "predicate": "starts_at",
      "relationship_id": "relationship-emigrant-crabtree-pine-valley-camp-start",
      "subject_id": "route-segment-emigrant-crabtree-pine-valley-camp",
      "temporal_scope": null
    }
  ],
  "route_geometry": null,
  "route_geometry_url": null,
  "type": "canonical_entity"
}
