{
  "claims": [
    {
      "claim": {
        "claim_id": "claim-emigrant-completion-box-springs-road",
        "evidence_ids": [
          "evidence-emigrant-completion-box-springs-road"
        ],
        "predicate": "historical_road_access",
        "spatial_scope_ids": [
          "scope-emigrant-box-springs"
        ],
        "subject_id": "trailhead-emigrant-box-springs",
        "temporal_scope": null,
        "value": {
          "current_access": "unknown",
          "mileages": "approximate; not modeled as driving route",
          "roads": [
            "3N01",
            "3N16",
            "3N20Y"
          ],
          "source_edition": "2012-04"
        }
      },
      "evidence": [
        {
          "claim_id": "claim-emigrant-completion-box-springs-road",
          "evidence_id": "evidence-emigrant-completion-box-springs-road",
          "notes": "",
          "observation_id": "observation-emigrant-completion-box-springs-road",
          "stance": "supports"
        }
      ],
      "observations": [
        {
          "artifact_refs": [],
          "content": "2012 directions from Summit Ranger District reach 3N01 via Long Barn then 3N16. Box Springs continues via 3N20Y; Bourland parking is the dead end beyond its junction. All road mileages in the guide are approximate.",
          "observation_id": "observation-emigrant-completion-box-springs-road",
          "observed_at": null,
          "observer": "Wayproof primary-source, map and source-feature review",
          "retrieved_at": "2026-10-06T20:36:35+00:00",
          "source_id": "source-usfs-emigrant-trailheads"
        }
      ],
      "sources": [
        {
          "locator": "https://www.fs.usda.gov/sites/nfs/files/r05/stanislaus/publication/emigrant-wilderness-trailheads.pdf",
          "publisher": "USDA Forest Service, Stanislaus National Forest",
          "source_id": "source-usfs-emigrant-trailheads"
        }
      ]
    }
  ],
  "entities": [
    {
      "entity_id": "trailhead-emigrant-box-springs",
      "kind": "trailhead",
      "name": "Box Springs Trailhead"
    }
  ],
  "history": [
    {
      "action": "ADD",
      "change_set_id": "wp-20261006-emigrant-completion",
      "evidence_refs": [
        "evidence-emigrant-completion-box-springs-road"
      ],
      "knowledge_gap_refs": [],
      "path": "canonical/v0/claims/claim-emigrant-completion-box-springs-road.json",
      "reason": "Add combined southern approaches, boundary, entry-policy and facility audit; preserve uncertainty.",
      "record_id": "claim-emigrant-completion-box-springs-road",
      "record_type": "claim",
      "summary": "Combine five southern/eastern Emigrant approaches with reviewed boundary, jurisdiction-specific planning and campground/operator inventory audit."
    }
  ],
  "navigation": {
    "next_id": "claim-emigrant-completion-box-start-topology",
    "position": 342,
    "previous_id": "claim-emigrant-completion-box-springs-recheck",
    "total": 3965
  },
  "observations": [
    {
      "artifact_refs": [],
      "content": "2012 directions from Summit Ranger District reach 3N01 via Long Barn then 3N16. Box Springs continues via 3N20Y; Bourland parking is the dead end beyond its junction. All road mileages in the guide are approximate.",
      "observation_id": "observation-emigrant-completion-box-springs-road",
      "observed_at": null,
      "observer": "Wayproof primary-source, map and source-feature review",
      "retrieved_at": "2026-10-06T20:36:35+00:00",
      "source_id": "source-usfs-emigrant-trailheads"
    }
  ],
  "record": {
    "claim_id": "claim-emigrant-completion-box-springs-road",
    "evidence_ids": [
      "evidence-emigrant-completion-box-springs-road"
    ],
    "predicate": "historical_road_access",
    "spatial_scope_ids": [
      "scope-emigrant-box-springs"
    ],
    "subject_id": "trailhead-emigrant-box-springs",
    "temporal_scope": null,
    "value": {
      "current_access": "unknown",
      "mileages": "approximate; not modeled as driving route",
      "roads": [
        "3N01",
        "3N16",
        "3N20Y"
      ],
      "source_edition": "2012-04"
    }
  },
  "record_type": "claim",
  "related_records": [],
  "sources": [
    {
      "locator": "https://www.fs.usda.gov/sites/nfs/files/r05/stanislaus/publication/emigrant-wilderness-trailheads.pdf",
      "publisher": "USDA Forest Service, Stanislaus National Forest",
      "source_id": "source-usfs-emigrant-trailheads"
    }
  ]
}