{
  "claims": [
    {
      "claim": {
        "claim_id": "claim-emigrant-northern-pct-south-1-geometry",
        "evidence_ids": [
          "evidence-emigrant-northern-pct-south-1-geometry"
        ],
        "predicate": "reviewed_route_display_geometry",
        "spatial_scope_ids": [
          "scope-route-emigrant-sonora-pass-leavitt-junction"
        ],
        "subject_id": "route-segment-emigrant-northern-pct-south-1",
        "temporal_scope": null,
        "value": {
          "coordinate_reference_system": "EPSG:4326",
          "current_route_status": "unknown; pre-trip check required",
          "end_coordinate": {
            "latitude": 38.32584044061291,
            "longitude": -119.63991885696785
          },
          "geometry_snapshot": {
            "feature_id": "usfs-emigrant-northern-pct-south-1",
            "path": "geometry/v0/snapshots/usfs-emigrant-northern-routes-20261006.geojson",
            "sha256": "3f1c624ca1e6d3909e647f702548cca99fcce37370fdbba23c34cae12e195cca"
          },
          "navigation_grade": false,
          "route_role": "official_mainline",
          "source_coordinate_accuracy": "unknown",
          "source_feature_id": 9501224,
          "source_globalid": "{A727D99A-D0CF-45FC-A408-A94FA4611519}",
          "source_vertex_range_inclusive": [
            0,
            60
          ],
          "start_coordinate": {
            "latitude": 38.328013414009625,
            "longitude": -119.63725036479067
          }
        }
      },
      "evidence": [
        {
          "claim_id": "claim-emigrant-northern-pct-south-1-geometry",
          "evidence_id": "evidence-emigrant-northern-pct-south-1-geometry",
          "notes": "",
          "observation_id": "observation-emigrant-northern-pct-south-1-geometry",
          "stance": "supports"
        }
      ],
      "observations": [
        {
          "artifact_refs": [],
          "content": "USFS National Forest System Trails object 9501224, globalid {A727D99A-D0CF-45FC-A408-A94FA4611519}, 2000 PCT: SONORA PASS - DOROTHY LK; reviewed inclusive normalized vertices 0–60. Endpoint assignments are descriptive and source lengths apply to the original feature.",
          "observation_id": "observation-emigrant-northern-pct-south-1-geometry",
          "observed_at": null,
          "observer": "Wayproof primary-source text, geospatial map and named-feature review",
          "retrieved_at": "2026-10-06T15:14:14+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-segment-emigrant-northern-pct-south-1",
      "kind": "route_segment",
      "name": "Pct South 1"
    }
  ],
  "history": [
    {
      "action": "ADD",
      "change_set_id": "wp-20261006-emigrant-northern-coverage",
      "evidence_refs": [],
      "knowledge_gap_refs": [],
      "path": "canonical/v0/observations/observation-emigrant-northern-pct-south-1-geometry.json",
      "reason": "Add bounded northern approaches, geometry and historical access evidence; preserve unresolved planning limits.",
      "record_id": "observation-emigrant-northern-pct-south-1-geometry",
      "record_type": "observation",
      "summary": "Add six northern Emigrant approaches, four with reviewed display geometry, plus distinct historical facilities and access conflicts."
    }
  ],
  "navigation": {
    "next_id": "observation-emigrant-northern-pct-south-1-topology",
    "position": 663,
    "previous_id": "observation-emigrant-northern-kennedy-water",
    "total": 1318
  },
  "observations": [
    {
      "artifact_refs": [],
      "content": "USFS National Forest System Trails object 9501224, globalid {A727D99A-D0CF-45FC-A408-A94FA4611519}, 2000 PCT: SONORA PASS - DOROTHY LK; reviewed inclusive normalized vertices 0–60. Endpoint assignments are descriptive and source lengths apply to the original feature.",
      "observation_id": "observation-emigrant-northern-pct-south-1-geometry",
      "observed_at": null,
      "observer": "Wayproof primary-source text, geospatial map and named-feature review",
      "retrieved_at": "2026-10-06T15:14:14+00:00",
      "source_id": "source-usfs-emigrant-nfs-trail-geometry"
    }
  ],
  "record": {
    "artifact_refs": [],
    "content": "USFS National Forest System Trails object 9501224, globalid {A727D99A-D0CF-45FC-A408-A94FA4611519}, 2000 PCT: SONORA PASS - DOROTHY LK; reviewed inclusive normalized vertices 0–60. Endpoint assignments are descriptive and source lengths apply to the original feature.",
    "observation_id": "observation-emigrant-northern-pct-south-1-geometry",
    "observed_at": null,
    "observer": "Wayproof primary-source text, geospatial map and named-feature review",
    "retrieved_at": "2026-10-06T15:14:14+00:00",
    "source_id": "source-usfs-emigrant-nfs-trail-geometry"
  },
  "record_type": "observation",
  "related_records": [],
  "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"
    }
  ]
}