{
  "claims": [
    {
      "claim": {
        "claim_id": "claim-emigrant-northern-eagle-pass-topology",
        "evidence_ids": [
          "evidence-emigrant-northern-eagle-pass-topology"
        ],
        "predicate": "mapped_route_connector",
        "spatial_scope_ids": [
          "scope-route-emigrant-eagle-meadow-eagle-pass"
        ],
        "subject_id": "route-segment-emigrant-northern-eagle-pass",
        "temporal_scope": null,
        "value": {
          "distance_miles": null,
          "distance_status": "not_printed",
          "end_node_id": "route-node-emigrant-eagle-pass-approach",
          "route_role": "official_mainline",
          "start_node_id": "route-node-emigrant-eagle-display-break",
          "support": "20E08 to the northern approach at the Eagle Pass boundary saddle; no southern descent included"
        }
      },
      "evidence": [
        {
          "claim_id": "claim-emigrant-northern-eagle-pass-topology",
          "evidence_id": "evidence-emigrant-northern-eagle-pass-topology",
          "notes": "",
          "observation_id": "observation-emigrant-northern-eagle-pass-topology",
          "stance": "supports"
        }
      ],
      "observations": [
        {
          "artifact_refs": [],
          "content": "20E08 to the northern approach at the Eagle Pass boundary saddle; no southern descent included Atomic mileage remains unknown; cumulative reports and GIS lengths are not subtracted or measured.",
          "observation_id": "observation-emigrant-northern-eagle-pass-topology",
          "observed_at": null,
          "observer": "Wayproof primary-source text, geospatial map and named-feature review",
          "retrieved_at": "2026-10-06T15:34:28+00:00",
          "source_id": "source-usfs-emigrant-overview-map"
        }
      ],
      "sources": [
        {
          "locator": "https://www.fs.usda.gov/sites/nfs/files/legacy-media/stanislaus/Emigrant%20Wilderness%20GEOSPATIAL.pdf",
          "publisher": "USDA Forest Service, Stanislaus National Forest",
          "source_id": "source-usfs-emigrant-overview-map"
        }
      ]
    }
  ],
  "entities": [
    {
      "entity_id": "route-segment-emigrant-northern-eagle-pass",
      "kind": "route_segment",
      "name": "Eagle Pass"
    }
  ],
  "history": [
    {
      "action": "ADD",
      "change_set_id": "wp-20261006-emigrant-northern-coverage",
      "evidence_refs": [],
      "knowledge_gap_refs": [],
      "path": "canonical/v0/observations/observation-emigrant-northern-eagle-pass-topology.json",
      "reason": "Add bounded northern approaches, geometry and historical access evidence; preserve unresolved planning limits.",
      "record_id": "observation-emigrant-northern-eagle-pass-topology",
      "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-eagle-start-geometry",
    "position": 629,
    "previous_id": "observation-emigrant-northern-eagle-pass-identity",
    "total": 1318
  },
  "observations": [
    {
      "artifact_refs": [],
      "content": "20E08 to the northern approach at the Eagle Pass boundary saddle; no southern descent included Atomic mileage remains unknown; cumulative reports and GIS lengths are not subtracted or measured.",
      "observation_id": "observation-emigrant-northern-eagle-pass-topology",
      "observed_at": null,
      "observer": "Wayproof primary-source text, geospatial map and named-feature review",
      "retrieved_at": "2026-10-06T15:34:28+00:00",
      "source_id": "source-usfs-emigrant-overview-map"
    }
  ],
  "record": {
    "artifact_refs": [],
    "content": "20E08 to the northern approach at the Eagle Pass boundary saddle; no southern descent included Atomic mileage remains unknown; cumulative reports and GIS lengths are not subtracted or measured.",
    "observation_id": "observation-emigrant-northern-eagle-pass-topology",
    "observed_at": null,
    "observer": "Wayproof primary-source text, geospatial map and named-feature review",
    "retrieved_at": "2026-10-06T15:34:28+00:00",
    "source_id": "source-usfs-emigrant-overview-map"
  },
  "record_type": "observation",
  "related_records": [],
  "sources": [
    {
      "locator": "https://www.fs.usda.gov/sites/nfs/files/legacy-media/stanislaus/Emigrant%20Wilderness%20GEOSPATIAL.pdf",
      "publisher": "USDA Forest Service, Stanislaus National Forest",
      "source_id": "source-usfs-emigrant-overview-map"
    }
  ]
}