{
  "claims": [
    {
      "claim": {
        "claim_id": "claim-half-dome-day-hike-published-profile",
        "evidence_ids": [
          "evidence-half-dome-day-hike-published-profile"
        ],
        "predicate": "published_route_profile",
        "spatial_scope_ids": [
          "scope-yosemite-valley"
        ],
        "subject_id": "route-half-dome-day-hike",
        "temporal_scope": null,
        "value": {
          "elevation_gain_ft": 4800,
          "objective_entity_ids": [
            "peak-half-dome"
          ],
          "operational_status_requires_current_check": true,
          "permit_topic_requires_separate_evaluation": true,
          "published_start_entity_id": "trailhead-happy-isles",
          "round_trip_miles_range": [
            14.0,
            16.0
          ]
        }
      },
      "evidence": [
        {
          "claim_id": "claim-half-dome-day-hike-published-profile",
          "evidence_id": "evidence-half-dome-day-hike-published-profile",
          "notes": "",
          "observation_id": "observation-nps-yosemite-half-dome-day-hike-20260925",
          "stance": "supports"
        }
      ],
      "observations": [
        {
          "artifact_refs": [],
          "content": "NPS describes the 14-to-16-mile Half Dome day hike, its 4,800 feet of gain, Happy Isles start, parking and early-start walking access, and the separate Half Dome permit topic.",
          "observation_id": "observation-nps-yosemite-half-dome-day-hike-20260925",
          "observed_at": null,
          "observer": "",
          "retrieved_at": "2026-09-25T00:00:00+00:00",
          "source_id": "source-nps-yosemite-half-dome-day-hike"
        }
      ],
      "sources": [
        {
          "locator": "https://www.nps.gov/yose/planyourvisit/halfdome.htm",
          "publisher": "National Park Service",
          "source_id": "source-nps-yosemite-half-dome-day-hike"
        }
      ]
    }
  ],
  "entities": [
    {
      "entity_id": "route-half-dome-day-hike",
      "kind": "route",
      "name": "Half Dome Day Hike"
    }
  ],
  "history": [
    {
      "action": "ADD",
      "change_set_id": "wp-20260925-yosemite-valley-depth",
      "evidence_refs": [],
      "knowledge_gap_refs": [],
      "path": "canonical/v0/sources/source-nps-yosemite-half-dome-day-hike.json",
      "reason": "Add reviewed Yosemite Valley planning depth.",
      "record_id": "source-nps-yosemite-half-dome-day-hike",
      "record_type": "source",
      "summary": "Add official-source Yosemite Valley day-use routes, access, facilities, objectives, transit context, map points, and explicit unresolved gaps."
    }
  ],
  "navigation": {
    "next_id": "source-nps-yosemite-hetch-hetchy",
    "position": 237,
    "previous_id": "source-nps-yosemite-glacier-point-hikes",
    "total": 587
  },
  "observations": [
    {
      "artifact_refs": [],
      "content": "NPS describes the 14-to-16-mile Half Dome day hike, its 4,800 feet of gain, Happy Isles start, parking and early-start walking access, and the separate Half Dome permit topic.",
      "observation_id": "observation-nps-yosemite-half-dome-day-hike-20260925",
      "observed_at": null,
      "observer": "",
      "retrieved_at": "2026-09-25T00:00:00+00:00",
      "source_id": "source-nps-yosemite-half-dome-day-hike"
    }
  ],
  "record": {
    "locator": "https://www.nps.gov/yose/planyourvisit/halfdome.htm",
    "publisher": "National Park Service",
    "source_id": "source-nps-yosemite-half-dome-day-hike"
  },
  "record_type": "source",
  "related_records": [],
  "sources": [
    {
      "locator": "https://www.nps.gov/yose/planyourvisit/halfdome.htm",
      "publisher": "National Park Service",
      "source_id": "source-nps-yosemite-half-dome-day-hike"
    }
  ]
}