{
  "claims": [
    {
      "claim": {
        "claim_id": "claim-emigrant-crabtree-bear-horizontal-distance",
        "evidence_ids": [
          "evidence-emigrant-crabtree-bear-horizontal-distance"
        ],
        "predicate": "camping_distance_measurement",
        "spatial_scope_ids": [
          "scope-waterbody-emigrant-bear-lake"
        ],
        "subject_id": "waterbody-emigrant-bear-lake",
        "temporal_scope": null,
        "value": {
          "basis": "horizontal; not slope line"
        }
      },
      "evidence": [
        {
          "claim_id": "claim-emigrant-crabtree-bear-horizontal-distance",
          "evidence_id": "evidence-emigrant-crabtree-bear-horizontal-distance",
          "notes": "",
          "observation_id": "observation-emigrant-crabtree-bear-horizontal-distance",
          "stance": "supports"
        }
      ],
      "observations": [
        {
          "artifact_refs": [],
          "content": "Minimum Camping Distance Map for Bear Lake, page 1 (2021 filename): distance from water to camp is measured horizontally, not on the slope line.",
          "observation_id": "observation-emigrant-crabtree-bear-horizontal-distance",
          "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-bear-camping-map"
        }
      ],
      "sources": [
        {
          "locator": "https://www.fs.usda.gov/sites/nfs/files/legacy-media/stanislaus/Bear%20Lake%20-%20Minimum%20Camping%20Distances%202021.pdf",
          "publisher": "USDA Forest Service, Stanislaus National Forest",
          "source_id": "source-usfs-emigrant-bear-camping-map"
        }
      ]
    }
  ],
  "entities": [
    {
      "entity_id": "waterbody-emigrant-bear-lake",
      "kind": "waterbody",
      "name": "Bear Lake (Emigrant Wilderness)"
    }
  ],
  "history": [
    {
      "action": "ADD",
      "change_set_id": "wp-20261005-emigrant-crabtree-lakes",
      "evidence_refs": [],
      "knowledge_gap_refs": [],
      "path": "canonical/v0/observations/observation-emigrant-crabtree-bear-horizontal-distance.json",
      "reason": "Add bounded Crabtree lake approaches while preserving map precision and unresolved coverage.",
      "record_id": "observation-emigrant-crabtree-bear-horizontal-distance",
      "record_type": "observation",
      "summary": "Model shared Crabtree approaches to Camp and Bear lakes with conflicting mileage reports and lake camping rechecks."
    }
  ],
  "navigation": {
    "next_id": "observation-emigrant-crabtree-bear-identity",
    "position": 554,
    "previous_id": "observation-emigrant-crabtree-bear-favorite-hikes",
    "total": 1318
  },
  "observations": [
    {
      "artifact_refs": [],
      "content": "Minimum Camping Distance Map for Bear Lake, page 1 (2021 filename): distance from water to camp is measured horizontally, not on the slope line.",
      "observation_id": "observation-emigrant-crabtree-bear-horizontal-distance",
      "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-bear-camping-map"
    }
  ],
  "record": {
    "artifact_refs": [],
    "content": "Minimum Camping Distance Map for Bear Lake, page 1 (2021 filename): distance from water to camp is measured horizontally, not on the slope line.",
    "observation_id": "observation-emigrant-crabtree-bear-horizontal-distance",
    "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-bear-camping-map"
  },
  "record_type": "observation",
  "related_records": [],
  "sources": [
    {
      "locator": "https://www.fs.usda.gov/sites/nfs/files/legacy-media/stanislaus/Bear%20Lake%20-%20Minimum%20Camping%20Distances%202021.pdf",
      "publisher": "USDA Forest Service, Stanislaus National Forest",
      "source_id": "source-usfs-emigrant-bear-camping-map"
    }
  ]
}