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      ],
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          "content": "Wayproof sampled each reviewed Rock Creek route geometry at approximately 100-meter intervals against the USGS 3DEP elevation service. Cumulative gain and loss are sums between samples and are approximate rather than surveyed or source-published trail values.",
          "observation_id": "observation-usgs-3dep-rock-creek-route-profiles-20260923",
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          "name": "Morgan Pass Trail from Mosquito Flat",
          "one_way_distance_miles_from_source_features": 5.48061415,
          "sampled_elevation_profile": {
            "approximate_cumulative_gain_ft": 1140,
            "approximate_cumulative_loss_ft": 810,
            "end_elevation_ft": 10548,
            "gain_loss_method": "sum of consecutive USGS 3DEP samples along reviewed route geometry",
            "maximum_elevation_ft": 11107,
            "minimum_elevation_ft": 10224,
            "precision": "approximate",
            "sample_count": 90,
            "sample_spacing_meters": 100,
            "start_elevation_ft": 10224
          }
        }
      },
      "evidence": [
        {
          "claim_id": "claim-route-morgan-pass-rock-creek-profile",
          "evidence_id": "evidence-route-morgan-pass-rock-creek-profile",
          "notes": "",
          "observation_id": "observation-usfs-rock-creek-map-20260923",
          "stance": "supports"
        },
        {
          "claim_id": "claim-route-morgan-pass-rock-creek-profile",
          "evidence_id": "evidence-route-morgan-pass-rock-creek-3dep-profile",
          "notes": "",
          "observation_id": "observation-usgs-3dep-rock-creek-route-profiles-20260923",
          "stance": "supports"
        }
      ],
      "observations": [
        {
          "artifact_refs": [
            "Rock Creek Area Trails, one-page map"
          ],
          "content": "The official Rock Creek Area Trails map depicts Rock Creek Road, the Palisade, East Fork, Pine Grove, Upper Pine Grove, Rock Creek Lake, and Tamarack developed corridor, three upper-canyon trailheads, John Muir Wilderness, and named Little Lakes, Mono Pass, Tamarack Lakes, and Hilton Creek/Lakes routes. It also labels the lakes and passes associated with those routes.",
          "observation_id": "observation-usfs-rock-creek-map-20260923",
          "observed_at": null,
          "observer": "",
          "retrieved_at": "2026-09-23T21:00:00+00:00",
          "source_id": "source-usfs-rock-creek-area-trails-map"
        },
        {
          "artifact_refs": [
            "geometry/v0/snapshots/usgs-rock-creek-principal-routes-20260923.geojson"
          ],
          "content": "Wayproof sampled each reviewed Rock Creek route geometry at approximately 100-meter intervals against the USGS 3DEP elevation service. Cumulative gain and loss are sums between samples and are approximate rather than surveyed or source-published trail values.",
          "observation_id": "observation-usgs-3dep-rock-creek-route-profiles-20260923",
          "observed_at": null,
          "observer": "",
          "retrieved_at": "2026-09-23T23:00:00+00:00",
          "source_id": "source-usgs-3dep-rock-creek-20260923"
        }
      ],
      "sources": [
        {
          "locator": "https://www.fs.usda.gov/media/122926",
          "publisher": "USDA Forest Service, Inyo National Forest",
          "source_id": "source-usfs-rock-creek-area-trails-map"
        },
        {
          "locator": "https://elevation.nationalmap.gov/arcgis/rest/services/3DEPElevation/ImageServer/getSamples",
          "publisher": "U.S. Geological Survey, 3D Elevation Program",
          "source_id": "source-usgs-3dep-rock-creek-20260923"
        }
      ]
    },
    {
      "claim": {
        "claim_id": "claim-route-tamarack-lakes-rock-creek-profile",
        "evidence_ids": [
          "evidence-route-tamarack-lakes-rock-creek-profile",
          "evidence-route-tamarack-lakes-rock-creek-3dep-profile"
        ],
        "predicate": "route_profile",
        "spatial_scope_ids": [
          "scope-route-tamarack-lakes-rock-creek"
        ],
        "subject_id": "route-tamarack-lakes-rock-creek",
        "temporal_scope": null,
        "value": {
          "bidirectional": true,
          "distance_basis": "sum of reviewed USGS source-field lengthmiles values",
          "map_role": "principal Rock Creek hiking route",
          "name": "Tamarack Lakes Trail",
          "one_way_distance_miles_from_source_features": 5.19126423,
          "sampled_elevation_profile": {
            "approximate_cumulative_gain_ft": 2200,
            "approximate_cumulative_loss_ft": 330,
            "end_elevation_ft": 11574,
            "gain_loss_method": "sum of consecutive USGS 3DEP samples along reviewed route geometry",
            "maximum_elevation_ft": 11643,
            "minimum_elevation_ft": 9707,
            "precision": "approximate",
            "sample_count": 85,
            "sample_spacing_meters": 100,
            "start_elevation_ft": 9707
          }
        }
      },
      "evidence": [
        {
          "claim_id": "claim-route-tamarack-lakes-rock-creek-profile",
          "evidence_id": "evidence-route-tamarack-lakes-rock-creek-profile",
          "notes": "",
          "observation_id": "observation-usfs-rock-creek-map-20260923",
          "stance": "supports"
        },
        {
          "claim_id": "claim-route-tamarack-lakes-rock-creek-profile",
          "evidence_id": "evidence-route-tamarack-lakes-rock-creek-3dep-profile",
          "notes": "",
          "observation_id": "observation-usgs-3dep-rock-creek-route-profiles-20260923",
          "stance": "supports"
        }
      ],
      "observations": [
        {
          "artifact_refs": [
            "Rock Creek Area Trails, one-page map"
          ],
          "content": "The official Rock Creek Area Trails map depicts Rock Creek Road, the Palisade, East Fork, Pine Grove, Upper Pine Grove, Rock Creek Lake, and Tamarack developed corridor, three upper-canyon trailheads, John Muir Wilderness, and named Little Lakes, Mono Pass, Tamarack Lakes, and Hilton Creek/Lakes routes. It also labels the lakes and passes associated with those routes.",
          "observation_id": "observation-usfs-rock-creek-map-20260923",
          "observed_at": null,
          "observer": "",
          "retrieved_at": "2026-09-23T21:00:00+00:00",
          "source_id": "source-usfs-rock-creek-area-trails-map"
        },
        {
          "artifact_refs": [
            "geometry/v0/snapshots/usgs-rock-creek-principal-routes-20260923.geojson"
          ],
          "content": "Wayproof sampled each reviewed Rock Creek route geometry at approximately 100-meter intervals against the USGS 3DEP elevation service. Cumulative gain and loss are sums between samples and are approximate rather than surveyed or source-published trail values.",
          "observation_id": "observation-usgs-3dep-rock-creek-route-profiles-20260923",
          "observed_at": null,
          "observer": "",
          "retrieved_at": "2026-09-23T23:00:00+00:00",
          "source_id": "source-usgs-3dep-rock-creek-20260923"
        }
      ],
      "sources": [
        {
          "locator": "https://www.fs.usda.gov/media/122926",
          "publisher": "USDA Forest Service, Inyo National Forest",
          "source_id": "source-usfs-rock-creek-area-trails-map"
        },
        {
          "locator": "https://elevation.nationalmap.gov/arcgis/rest/services/3DEPElevation/ImageServer/getSamples",
          "publisher": "U.S. Geological Survey, 3D Elevation Program",
          "source_id": "source-usgs-3dep-rock-creek-20260923"
        }
      ]
    },
    {
      "claim": {
        "claim_id": "claim-trailhead-hilton-lakes-operational-profile",
        "evidence_ids": [
          "evidence-trailhead-hilton-lakes-operational-profile"
        ],
        "predicate": "trailhead_operational_profile",
        "spatial_scope_ids": [],
        "subject_id": "trailhead-hilton-lakes-rock-creek",
        "temporal_scope": null,
        "value": {
          "parking": {
            "capacity": "unknown",
            "overflow": "unknown",
            "status": "unknown"
          },
          "potable_water": {
            "status": "unknown"
          },
          "road_access": {
            "surface": "paved"
          },
          "route_connector": {
            "description": "Official map depicts the Hilton Creek Lakes route meeting the trailhead.",
            "exact_geometry": "unresolved",
            "status": "depicted"
          },
          "toilets": {
            "status": "unknown"
          }
        }
      },
      "evidence": [
        {
          "claim_id": "claim-trailhead-hilton-lakes-operational-profile",
          "evidence_id": "evidence-trailhead-hilton-lakes-operational-profile",
          "notes": "",
          "observation_id": "observation-rock-creek-hilton-trailhead-operations-20260925",
          "stance": "supports"
        }
      ],
      "observations": [
        {
          "artifact_refs": [
            "Rock Creek Area Trails map"
          ],
          "content": "The official Rock Creek Area Trails map depicts the Hilton Creek Lakes route meeting a trailhead beside Rock Creek Lake. The mapped road approach is paved. The map does not publish a parking-space count, overflow arrangement, restroom, or potable-water service for this trailhead.",
          "observation_id": "observation-rock-creek-hilton-trailhead-operations-20260925",
          "observed_at": null,
          "observer": "",
          "retrieved_at": "2026-09-25T22:00:00+00:00",
          "source_id": "source-usfs-rock-creek-area-trails-map"
        }
      ],
      "sources": [
        {
          "locator": "https://www.fs.usda.gov/media/122926",
          "publisher": "USDA Forest Service, Inyo National Forest",
          "source_id": "source-usfs-rock-creek-area-trails-map"
        }
      ]
    }
  ],
  "entities": [
    {
      "entity_id": "peak-bear-creek-spire",
      "kind": "peak",
      "name": "Bear Creek Spire"
    },
    {
      "entity_id": "peak-mount-abbot",
      "kind": "peak",
      "name": "Mount Abbot"
    },
    {
      "entity_id": "peak-mount-dade",
      "kind": "peak",
      "name": "Mount Dade"
    },
    {
      "entity_id": "peak-mount-morgan-south",
      "kind": "peak",
      "name": "Mount Morgan"
    },
    {
      "entity_id": "peak-mount-starr-rock-creek",
      "kind": "peak",
      "name": "Mount Starr"
    },
    {
      "entity_id": "place-rock-creek-canyon",
      "kind": "canyon",
      "name": "Rock Creek Canyon"
    },
    {
      "entity_id": "route-hilton-lakes-rock-creek",
      "kind": "route",
      "name": "Hilton Lakes Trail"
    },
    {
      "entity_id": "route-little-lakes-valley",
      "kind": "route",
      "name": "Little Lakes Valley Trail"
    },
    {
      "entity_id": "route-mono-pass-rock-creek",
      "kind": "route",
      "name": "Mono Pass Trail from Mosquito Flat"
    },
    {
      "entity_id": "route-morgan-pass-rock-creek",
      "kind": "route",
      "name": "Morgan Pass Trail from Mosquito Flat"
    },
    {
      "entity_id": "route-tamarack-lakes-rock-creek",
      "kind": "route",
      "name": "Tamarack Lakes Trail"
    },
    {
      "entity_id": "trailhead-hilton-lakes-rock-creek",
      "kind": "trailhead",
      "name": "Hilton Lakes Trailhead at Rock Creek Lake"
    }
  ],
  "history": [
    {
      "action": "ADD",
      "change_set_id": "wp-20260923-rock-creek-corridor-principal-routes",
      "evidence_refs": [],
      "knowledge_gap_refs": [],
      "path": "canonical/v0/sources/source-usfs-rock-creek-area-trails-map.json",
      "reason": "Publish the official Rock Creek corridor, principal distance-bearing hiking topology, reviewed geometry, and Mosquito Flat overnight-permit boundary.",
      "record_id": "source-usfs-rock-creek-area-trails-map",
      "record_type": "source",
      "summary": "Add the Rock Creek developed corridor, five principal bidirectional hiking routes with reviewed GeoJSON, Mosquito Flat access, overnight permit and food-storage requirements, and explicit unresolved spur/current-condition gaps."
    }
  ],
  "navigation": {
    "next_id": "source-usfs-rock-creek-boating-site",
    "position": 567,
    "previous_id": "source-usfs-recreation-opportunities-eastern-sierra-20260925",
    "total": 587
  },
  "observations": [
    {
      "artifact_refs": [
        "Rock Creek Area Trails map"
      ],
      "content": "The official Rock Creek Area Trails map depicts the Hilton Creek Lakes route meeting a trailhead beside Rock Creek Lake. The mapped road approach is paved. The map does not publish a parking-space count, overflow arrangement, restroom, or potable-water service for this trailhead.",
      "observation_id": "observation-rock-creek-hilton-trailhead-operations-20260925",
      "observed_at": null,
      "observer": "",
      "retrieved_at": "2026-09-25T22:00:00+00:00",
      "source_id": "source-usfs-rock-creek-area-trails-map"
    },
    {
      "artifact_refs": [
        "Rock Creek Area Trails, one-page map"
      ],
      "content": "The official Rock Creek Area Trails map depicts Rock Creek Road, the Palisade, East Fork, Pine Grove, Upper Pine Grove, Rock Creek Lake, and Tamarack developed corridor, three upper-canyon trailheads, John Muir Wilderness, and named Little Lakes, Mono Pass, Tamarack Lakes, and Hilton Creek/Lakes routes. It also labels the lakes and passes associated with those routes.",
      "observation_id": "observation-usfs-rock-creek-map-20260923",
      "observed_at": null,
      "observer": "",
      "retrieved_at": "2026-09-23T21:00:00+00:00",
      "source_id": "source-usfs-rock-creek-area-trails-map"
    },
    {
      "artifact_refs": [
        "Rock Creek Area Trails, one-page map"
      ],
      "content": "The official Rock Creek Area Trails map labels Mount Morgan at 13,748 feet, Mount Starr at 12,835 feet, Mount Dade at 13,600 feet, Mount Abbot at 13,704 feet, and Bear Creek Spire at 13,713 feet. The mapped maintained routes pass near these peaks but the map does not depict a maintained trail reaching their summits.",
      "observation_id": "observation-usfs-rock-creek-map-peaks-20260923",
      "observed_at": null,
      "observer": "",
      "retrieved_at": "2026-09-23T23:30:00+00:00",
      "source_id": "source-usfs-rock-creek-area-trails-map"
    }
  ],
  "record": {
    "locator": "https://www.fs.usda.gov/media/122926",
    "publisher": "USDA Forest Service, Inyo National Forest",
    "source_id": "source-usfs-rock-creek-area-trails-map"
  },
  "record_type": "source",
  "related_records": [],
  "sources": [
    {
      "locator": "https://www.fs.usda.gov/media/122926",
      "publisher": "USDA Forest Service, Inyo National Forest",
      "source_id": "source-usfs-rock-creek-area-trails-map"
    }
  ]
}