{
  "claims": [],
  "entities": [],
  "history": [
    {
      "action": "ADD",
      "change_set_id": "wp-20260925-yosemite-wilderness-trailheads",
      "evidence_refs": [],
      "knowledge_gap_refs": [],
      "path": "canonical/v0/observations/observation-nps-yosemite-wilderness-trailheads-map-20260925.json",
      "reason": "Add the official Yosemite wilderness permit-entry and quota matrix.",
      "record_id": "observation-nps-yosemite-wilderness-trailheads-map-20260925",
      "record_type": "observation",
      "summary": "Add the complete official 2026 Yosemite wilderness permit-entry matrix, quotas, eligibility, operational context, and explicit unresolved physical-topology gaps."
    }
  ],
  "navigation": {
    "next_id": "observation-ohlone-college-daily-permits",
    "position": 941,
    "previous_id": "observation-nps-yosemite-wilderness-trailhead-parking-20260925",
    "total": 1318
  },
  "observations": [
    {
      "artifact_refs": [],
      "content": "The March 2022 NPS wilderness trailheads map distinguishes permit-entry categories, direction-of-travel arrows, minimum first-night camping boundaries, Half Dome-eligible entries, outside-agency starts, and named regional trailheads.",
      "observation_id": "observation-nps-yosemite-wilderness-trailheads-map-20260925",
      "observed_at": null,
      "observer": "",
      "retrieved_at": "2026-09-25T00:00:00+00:00",
      "source_id": "source-nps-yosemite-wilderness-trailheads-map-2022"
    }
  ],
  "record": {
    "artifact_refs": [],
    "content": "The March 2022 NPS wilderness trailheads map distinguishes permit-entry categories, direction-of-travel arrows, minimum first-night camping boundaries, Half Dome-eligible entries, outside-agency starts, and named regional trailheads.",
    "observation_id": "observation-nps-yosemite-wilderness-trailheads-map-20260925",
    "observed_at": null,
    "observer": "",
    "retrieved_at": "2026-09-25T00:00:00+00:00",
    "source_id": "source-nps-yosemite-wilderness-trailheads-map-2022"
  },
  "record_type": "observation",
  "related_records": [],
  "sources": [
    {
      "locator": "https://www.nps.gov/yose/planyourvisit/upload/wildernesstrailheads.pdf",
      "publisher": "National Park Service",
      "source_id": "source-nps-yosemite-wilderness-trailheads-map-2022"
    }
  ]
}