{
  "claims": [
    {
      "claim": {
        "claim_id": "claim-cinder-cone-route-detail",
        "evidence_ids": [
          "evidence-cinder-cone-route-detail"
        ],
        "predicate": "published_route_description",
        "spatial_scope_ids": [
          "scope-route-cinder-cone-trail"
        ],
        "subject_id": "route-cinder-cone-trail",
        "temporal_scope": null,
        "value": {
          "base_fork_miles_from_trailhead": 1.2,
          "base_round_trip_miles": 2.4,
          "crater_trail_is_additional": true,
          "route_to_summit": "take the left/south trail at the base fork and continue to the top",
          "summit_round_trip_miles": 4
        }
      },
      "evidence": [
        {
          "claim_id": "claim-cinder-cone-route-detail",
          "evidence_id": "evidence-cinder-cone-route-detail",
          "notes": "",
          "observation_id": "observation-nps-lassen-cinder-cone-place-20260923",
          "stance": "supports"
        }
      ],
      "observations": [
        {
          "artifact_refs": [],
          "content": "NPS describes a 2.4-mile round trip to the cone base and a four-mile round trip to the summit. At 1.2 miles the trail reaches a fork at the base; hikers take the left/south trail, circle toward the south side, and continue to the top. An additional separate trail continues into the crater. The trailhead is near the Butte Lake boat ramp, and current access and trail conditions require recheck.",
          "observation_id": "observation-nps-lassen-cinder-cone-place-20260923",
          "observed_at": null,
          "observer": "",
          "retrieved_at": "2026-09-23T16:00:00+00:00",
          "source_id": "source-nps-lassen-cinder-cone-place"
        }
      ],
      "sources": [
        {
          "locator": "https://www.nps.gov/places/cinder_cone.htm",
          "publisher": "National Park Service",
          "source_id": "source-nps-lassen-cinder-cone-place"
        }
      ]
    }
  ],
  "entities": [
    {
      "entity_id": "route-cinder-cone-trail",
      "kind": "route",
      "name": "Cinder Cone Trail"
    }
  ],
  "history": [
    {
      "action": "ADD",
      "change_set_id": "wp-20260923-lassen-cinder-cone-route-graph",
      "evidence_refs": [
        "evidence-cinder-trailhead-nobles-junction",
        "evidence-cinder-nobles-junction-base-fork",
        "evidence-cinder-base-fork-summit",
        "evidence-cinder-cone-official-trailhead-coordinate",
        "evidence-cinder-cone-route-detail",
        "evidence-cinder-cone-source-profile-variation",
        "evidence-cinder-cone-source-profile-variation-nps"
      ],
      "knowledge_gap_refs": [
        "gap-lassen-cinder-rim-crater-circulation",
        "gap-lassen-cinder-source-profile-variation",
        "gap-lassen-specific-route-topology"
      ],
      "path": "canonical/v0/claims/claim-cinder-cone-route-detail.json",
      "reason": "Publish the official distance-bearing Butte Lake-to-Cinder Cone summit approach while preserving unresolved rim and crater branch roles.",
      "record_id": "claim-cinder-cone-route-detail",
      "record_type": "claim",
      "summary": "Add the exact official Cinder Cone summit approach with trailhead geometry and explicit rim/crater uncertainty."
    }
  ],
  "navigation": {
    "next_id": "claim-cinder-cone-source-profile-variation",
    "position": 78,
    "previous_id": "claim-cinder-cone-official-trailhead-coordinate",
    "total": 3965
  },
  "observations": [
    {
      "artifact_refs": [],
      "content": "NPS describes a 2.4-mile round trip to the cone base and a four-mile round trip to the summit. At 1.2 miles the trail reaches a fork at the base; hikers take the left/south trail, circle toward the south side, and continue to the top. An additional separate trail continues into the crater. The trailhead is near the Butte Lake boat ramp, and current access and trail conditions require recheck.",
      "observation_id": "observation-nps-lassen-cinder-cone-place-20260923",
      "observed_at": null,
      "observer": "",
      "retrieved_at": "2026-09-23T16:00:00+00:00",
      "source_id": "source-nps-lassen-cinder-cone-place"
    }
  ],
  "record": {
    "claim_id": "claim-cinder-cone-route-detail",
    "evidence_ids": [
      "evidence-cinder-cone-route-detail"
    ],
    "predicate": "published_route_description",
    "spatial_scope_ids": [
      "scope-route-cinder-cone-trail"
    ],
    "subject_id": "route-cinder-cone-trail",
    "temporal_scope": null,
    "value": {
      "base_fork_miles_from_trailhead": 1.2,
      "base_round_trip_miles": 2.4,
      "crater_trail_is_additional": true,
      "route_to_summit": "take the left/south trail at the base fork and continue to the top",
      "summit_round_trip_miles": 4
    }
  },
  "record_type": "claim",
  "related_records": [],
  "sources": [
    {
      "locator": "https://www.nps.gov/places/cinder_cone.htm",
      "publisher": "National Park Service",
      "source_id": "source-nps-lassen-cinder-cone-place"
    }
  ]
}