{
  "claims": [
    {
      "claim": {
        "claim_id": "claim-lassen-wilderness-permit",
        "evidence_ids": [
          "evidence-lassen-wilderness-permit"
        ],
        "predicate": "overnight_wilderness_permit_required",
        "spatial_scope_ids": [
          "scope-lassen-wilderness"
        ],
        "subject_id": "land-lassen-volcanic-wilderness",
        "temporal_scope": null,
        "value": true
      },
      "evidence": [
        {
          "claim_id": "claim-lassen-wilderness-permit",
          "evidence_id": "evidence-lassen-wilderness-permit",
          "notes": "",
          "observation_id": "observation-nps-lassen-wilderness-20260922",
          "stance": "supports"
        }
      ],
      "observations": [
        {
          "artifact_refs": [],
          "content": "Backcountry camping requires an online wilderness permit; permits have no quota and can be reserved up to 90 days before the trip. Approved bear-resistant containers are required April 16 through November 30 and hanging is prohibited.",
          "observation_id": "observation-nps-lassen-wilderness-20260922",
          "observed_at": null,
          "observer": "",
          "retrieved_at": "2026-09-22T19:00:00+00:00",
          "source_id": "source-nps-lassen-wilderness"
        }
      ],
      "sources": [
        {
          "locator": "https://www.nps.gov/lavo/planyourvisit/wilderness-permit-information.htm",
          "publisher": "National Park Service",
          "source_id": "source-nps-lassen-wilderness"
        }
      ]
    },
    {
      "claim": {
        "claim_id": "claim-lassen-wilderness-permit-fees",
        "evidence_ids": [
          "evidence-lassen-wilderness-permit-fees"
        ],
        "predicate": "published_wilderness_permit_fees",
        "spatial_scope_ids": [
          "scope-lassen-wilderness"
        ],
        "subject_id": "land-lassen-volcanic-wilderness",
        "temporal_scope": null,
        "value": {
          "administration_usd_per_permit": 6,
          "entrance_fee_separate": true,
          "trip_usd_per_person_age_16_plus": 5
        }
      },
      "evidence": [
        {
          "claim_id": "claim-lassen-wilderness-permit-fees",
          "evidence_id": "evidence-lassen-wilderness-permit-fees",
          "notes": "",
          "observation_id": "observation-nps-lassen-wilderness-20260922",
          "stance": "supports"
        }
      ],
      "observations": [
        {
          "artifact_refs": [],
          "content": "Backcountry camping requires an online wilderness permit; permits have no quota and can be reserved up to 90 days before the trip. Approved bear-resistant containers are required April 16 through November 30 and hanging is prohibited.",
          "observation_id": "observation-nps-lassen-wilderness-20260922",
          "observed_at": null,
          "observer": "",
          "retrieved_at": "2026-09-22T19:00:00+00:00",
          "source_id": "source-nps-lassen-wilderness"
        }
      ],
      "sources": [
        {
          "locator": "https://www.nps.gov/lavo/planyourvisit/wilderness-permit-information.htm",
          "publisher": "National Park Service",
          "source_id": "source-nps-lassen-wilderness"
        }
      ]
    }
  ],
  "entities": [
    {
      "entity_id": "land-lassen-volcanic-wilderness",
      "kind": "wilderness",
      "name": "Lassen Volcanic Wilderness"
    }
  ],
  "history": [
    {
      "action": "ADD",
      "change_set_id": "wp-20260922-lassen-nps-foundation",
      "evidence_refs": [],
      "knowledge_gap_refs": [],
      "path": "canonical/v0/observations/observation-nps-lassen-wilderness-20260922.json",
      "reason": "Publish a bounded source-backed Lassen Volcanic National Park planning foundation from current official NPS and linked first-party operational sources.",
      "record_id": "observation-nps-lassen-wilderness-20260922",
      "record_type": "observation",
      "summary": "Add a bounded official-source Lassen Volcanic National Park planning foundation with explicit source conflict, operational rechecks, and deferred-detail gaps."
    }
  ],
  "navigation": {
    "next_id": "observation-nps-public-pois-glacier-point-20260925",
    "position": 869,
    "previous_id": "observation-nps-lassen-trail-conditions-20260923",
    "total": 1318
  },
  "observations": [
    {
      "artifact_refs": [],
      "content": "Backcountry camping requires an online wilderness permit; permits have no quota and can be reserved up to 90 days before the trip. Approved bear-resistant containers are required April 16 through November 30 and hanging is prohibited.",
      "observation_id": "observation-nps-lassen-wilderness-20260922",
      "observed_at": null,
      "observer": "",
      "retrieved_at": "2026-09-22T19:00:00+00:00",
      "source_id": "source-nps-lassen-wilderness"
    }
  ],
  "record": {
    "artifact_refs": [],
    "content": "Backcountry camping requires an online wilderness permit; permits have no quota and can be reserved up to 90 days before the trip. Approved bear-resistant containers are required April 16 through November 30 and hanging is prohibited.",
    "observation_id": "observation-nps-lassen-wilderness-20260922",
    "observed_at": null,
    "observer": "",
    "retrieved_at": "2026-09-22T19:00:00+00:00",
    "source_id": "source-nps-lassen-wilderness"
  },
  "record_type": "observation",
  "related_records": [],
  "sources": [
    {
      "locator": "https://www.nps.gov/lavo/planyourvisit/wilderness-permit-information.htm",
      "publisher": "National Park Service",
      "source_id": "source-nps-lassen-wilderness"
    }
  ]
}