{
  "claims": [
    {
      "claim": {
        "claim_id": "claim-mammoth-lakes-basin-route-map",
        "evidence_ids": [
          "evidence-mammoth-lakes-basin-route-map"
        ],
        "predicate": "mapped_day_hike_access",
        "spatial_scope_ids": [
          "scope-place-mammoth-lakes-basin"
        ],
        "subject_id": "place-mammoth-lakes-basin",
        "temporal_scope": null,
        "value": {
          "Coldwater Trailhead": "Heart Lake and Duck Pass routes",
          "Horseshoe Lake Trailhead": "McLeod Lake and Mammoth Pass routes",
          "Lake George Trailhead": "Crystal Lake Trail"
        }
      },
      "evidence": [
        {
          "claim_id": "claim-mammoth-lakes-basin-route-map",
          "evidence_id": "evidence-mammoth-lakes-basin-route-map",
          "notes": "",
          "observation_id": "observation-usfs-mammoth-lakes-area-map-20260923",
          "stance": "supports"
        }
      ],
      "observations": [
        {
          "artifact_refs": [],
          "content": "The official Mammoth Lakes area map depicts Lake George and Crystal Lake Trail, Coldwater/Duck Pass trailhead with Heart and Emerald Lakes, and Horseshoe Lake/Mammoth Pass trailhead with McLeod Lake. It also distinguishes mapped trailheads, campgrounds, picnic areas, and restroom symbols, including locations explicitly marked as having no restroom.",
          "observation_id": "observation-usfs-mammoth-lakes-area-map-20260923",
          "observed_at": null,
          "observer": "",
          "retrieved_at": "2026-09-23T23:00:00+00:00",
          "source_id": "source-usfs-mammoth-lakes-area-map"
        }
      ],
      "sources": [
        {
          "locator": "https://www.fs.usda.gov/Internet/FSE_DOCUMENTS/fseprd1173411.pdf",
          "publisher": "USDA Forest Service",
          "source_id": "source-usfs-mammoth-lakes-area-map"
        }
      ]
    }
  ],
  "entities": [
    {
      "entity_id": "place-mammoth-lakes-basin",
      "kind": "basin",
      "name": "Mammoth Lakes Basin"
    }
  ],
  "history": [
    {
      "action": "ADD",
      "change_set_id": "wp-20260923-eastern-sierra-foliage-hikes",
      "evidence_refs": [],
      "knowledge_gap_refs": [],
      "path": "canonical/v0/claims/claim-mammoth-lakes-basin-route-map.json",
      "reason": "Publish a source-backed access and route foundation for Eastern Sierra fall-foliage day-hike alternatives near East Fork Campground.",
      "record_id": "claim-mammoth-lakes-basin-route-map",
      "record_type": "claim",
      "summary": "Add source-backed Eastern Sierra foliage-hike trailheads, managing areas, route associations, published distances and hazards, plus explicit research and pre-trip gaps."
    }
  ],
  "navigation": {
    "next_id": "claim-mariposa-big-trees-loop-ordered-geometry-20260926",
    "position": 1061,
    "previous_id": "claim-lundy-hoover-management",
    "total": 3965
  },
  "observations": [
    {
      "artifact_refs": [],
      "content": "The official Mammoth Lakes area map depicts Lake George and Crystal Lake Trail, Coldwater/Duck Pass trailhead with Heart and Emerald Lakes, and Horseshoe Lake/Mammoth Pass trailhead with McLeod Lake. It also distinguishes mapped trailheads, campgrounds, picnic areas, and restroom symbols, including locations explicitly marked as having no restroom.",
      "observation_id": "observation-usfs-mammoth-lakes-area-map-20260923",
      "observed_at": null,
      "observer": "",
      "retrieved_at": "2026-09-23T23:00:00+00:00",
      "source_id": "source-usfs-mammoth-lakes-area-map"
    }
  ],
  "record": {
    "claim_id": "claim-mammoth-lakes-basin-route-map",
    "evidence_ids": [
      "evidence-mammoth-lakes-basin-route-map"
    ],
    "predicate": "mapped_day_hike_access",
    "spatial_scope_ids": [
      "scope-place-mammoth-lakes-basin"
    ],
    "subject_id": "place-mammoth-lakes-basin",
    "temporal_scope": null,
    "value": {
      "Coldwater Trailhead": "Heart Lake and Duck Pass routes",
      "Horseshoe Lake Trailhead": "McLeod Lake and Mammoth Pass routes",
      "Lake George Trailhead": "Crystal Lake Trail"
    }
  },
  "record_type": "claim",
  "related_records": [],
  "sources": [
    {
      "locator": "https://www.fs.usda.gov/Internet/FSE_DOCUMENTS/fseprd1173411.pdf",
      "publisher": "USDA Forest Service",
      "source_id": "source-usfs-mammoth-lakes-area-map"
    }
  ]
}