{
  "claims": [
    {
      "claim": {
        "claim_id": "claim-emigrant-northern-pct-south-1-topology",
        "evidence_ids": [
          "evidence-emigrant-northern-pct-south-1-topology"
        ],
        "predicate": "mapped_route_connector",
        "spatial_scope_ids": [
          "scope-route-emigrant-sonora-pass-leavitt-junction"
        ],
        "subject_id": "route-segment-emigrant-northern-pct-south-1",
        "temporal_scope": null,
        "value": {
          "distance_miles": null,
          "distance_status": "not_printed",
          "end_node_id": "route-node-emigrant-pct-sonora-break-1",
          "route_role": "official_mainline",
          "start_node_id": "trailhead-emigrant-sonora-pass",
          "support": "PCT south from Highway 108; display begins on the south side, not at northern parking"
        }
      },
      "evidence": [
        {
          "claim_id": "claim-emigrant-northern-pct-south-1-topology",
          "evidence_id": "evidence-emigrant-northern-pct-south-1-topology",
          "notes": "",
          "observation_id": "observation-emigrant-northern-pct-south-1-topology",
          "stance": "supports"
        }
      ],
      "observations": [
        {
          "artifact_refs": [],
          "content": "PCT south from Highway 108; display begins on the south side, not at northern parking Atomic mileage remains unknown; cumulative reports and GIS lengths are not subtracted or measured.",
          "observation_id": "observation-emigrant-northern-pct-south-1-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-pct-south-1",
      "kind": "route_segment",
      "name": "Pct South 1"
    }
  ],
  "history": [
    {
      "action": "ADD",
      "change_set_id": "wp-20261006-emigrant-northern-coverage",
      "evidence_refs": [],
      "knowledge_gap_refs": [],
      "path": "canonical/v0/observations/observation-emigrant-northern-pct-south-1-topology.json",
      "reason": "Add bounded northern approaches, geometry and historical access evidence; preserve unresolved planning limits.",
      "record_id": "observation-emigrant-northern-pct-south-1-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-pct-south-2-geometry",
    "position": 664,
    "previous_id": "observation-emigrant-northern-pct-south-1-geometry",
    "total": 1318
  },
  "observations": [
    {
      "artifact_refs": [],
      "content": "PCT south from Highway 108; display begins on the south side, not at northern parking Atomic mileage remains unknown; cumulative reports and GIS lengths are not subtracted or measured.",
      "observation_id": "observation-emigrant-northern-pct-south-1-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": "PCT south from Highway 108; display begins on the south side, not at northern parking Atomic mileage remains unknown; cumulative reports and GIS lengths are not subtracted or measured.",
    "observation_id": "observation-emigrant-northern-pct-south-1-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"
    }
  ]
}