{
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    {
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        ],
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        ],
        "subject_id": "campgrounds-lassen-developed",
        "temporal_scope": null,
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          {
            "entity_id": "campground-lassen-manzanita-lake",
            "name": "Manzanita Lake Campground"
          },
          {
            "entity_id": "campground-lassen-manzanita-lake-group",
            "name": "Manzanita Lake Group Campground"
          },
          {
            "entity_id": "campground-lassen-lost-creek-group",
            "name": "Lost Creek Group Campground"
          },
          {
            "entity_id": "campground-lassen-summit-lake-north",
            "name": "Summit Lake North Campground"
          },
          {
            "entity_id": "campground-lassen-summit-lake-south",
            "name": "Summit Lake South Campground"
          },
          {
            "entity_id": "campground-lassen-southwest-walk-in",
            "name": "Southwest Walk-In Campground"
          },
          {
            "entity_id": "campground-lassen-butte-lake",
            "name": "Butte Lake Campground"
          },
          {
            "entity_id": "campground-lassen-butte-lake-group",
            "name": "Butte Lake Group Campground"
          },
          {
            "entity_id": "campground-lassen-juniper-lake",
            "name": "Juniper Lake Campground"
          },
          {
            "entity_id": "campground-lassen-juniper-lake-group",
            "name": "Juniper Lake Group Campground"
          },
          {
            "entity_id": "campground-lassen-warner-valley",
            "name": "Warner Valley Campground"
          }
        ]
      },
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        {
          "claim_id": "claim-lassen-campground-collection",
          "evidence_id": "evidence-lassen-campground-collection",
          "notes": "",
          "observation_id": "observation-nps-lassen-camping-20260922",
          "stance": "supports"
        }
      ],
      "observations": [
        {
          "artifact_refs": [],
          "content": "NPS publishes a campground collection, site counts, and fees. Its reservation summary says reservations are required except at Juniper Lake and Southwest Walk-In, while its detailed first-come, first-served section also lists Warner Valley. Opening dates, road access, and operations remain subject to weather, road status, and public safety.",
          "observation_id": "observation-nps-lassen-camping-20260922",
          "observed_at": null,
          "observer": "",
          "retrieved_at": "2026-09-22T19:00:00+00:00",
          "source_id": "source-nps-lassen-camping"
        }
      ],
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        {
          "locator": "https://www.nps.gov/lavo/planyourvisit/camping-in-campgrounds.htm",
          "publisher": "National Park Service",
          "source_id": "source-nps-lassen-camping"
        }
      ]
    },
    {
      "claim": {
        "claim_id": "claim-lassen-campground-operations-recheck",
        "evidence_ids": [
          "evidence-lassen-campground-operations-recheck"
        ],
        "predicate": "pretrip_campground_operations_recheck",
        "spatial_scope_ids": [
          "scope-lassen-developed-campgrounds"
        ],
        "subject_id": "campgrounds-lassen-developed",
        "temporal_scope": null,
        "value": {
          "required": true,
          "topics": [
            "opening_and_closing_dates",
            "road_access",
            "reservation_requirements",
            "live_inventory",
            "fees",
            "potable_water"
          ]
        }
      },
      "evidence": [
        {
          "claim_id": "claim-lassen-campground-operations-recheck",
          "evidence_id": "evidence-lassen-campground-operations-recheck",
          "notes": "",
          "observation_id": "observation-nps-lassen-camping-20260922",
          "stance": "supports"
        }
      ],
      "observations": [
        {
          "artifact_refs": [],
          "content": "NPS publishes a campground collection, site counts, and fees. Its reservation summary says reservations are required except at Juniper Lake and Southwest Walk-In, while its detailed first-come, first-served section also lists Warner Valley. Opening dates, road access, and operations remain subject to weather, road status, and public safety.",
          "observation_id": "observation-nps-lassen-camping-20260922",
          "observed_at": null,
          "observer": "",
          "retrieved_at": "2026-09-22T19:00:00+00:00",
          "source_id": "source-nps-lassen-camping"
        }
      ],
      "sources": [
        {
          "locator": "https://www.nps.gov/lavo/planyourvisit/camping-in-campgrounds.htm",
          "publisher": "National Park Service",
          "source_id": "source-nps-lassen-camping"
        }
      ]
    },
    {
      "claim": {
        "claim_id": "claim-lassen-campground-reservations",
        "evidence_ids": [
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        ],
        "predicate": "reservation_policy",
        "spatial_scope_ids": [
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        ],
        "subject_id": "campgrounds-lassen-developed",
        "temporal_scope": null,
        "value": {
          "channel": "Recreation.gov",
          "required_except": [
            "Juniper Lake",
            "Southwest Walk-In",
            "Warner Valley"
          ],
          "source_page_conflict": "The page's reservation summary omits Warner Valley, but its detailed first-come, first-served section includes Warner Valley.",
          "warning": "connectivity is often unavailable in the park; arrange before arrival"
        }
      },
      "evidence": [
        {
          "claim_id": "claim-lassen-campground-reservations",
          "evidence_id": "evidence-lassen-campground-reservations",
          "notes": "",
          "observation_id": "observation-nps-lassen-camping-20260922",
          "stance": "supports"
        }
      ],
      "observations": [
        {
          "artifact_refs": [],
          "content": "NPS publishes a campground collection, site counts, and fees. Its reservation summary says reservations are required except at Juniper Lake and Southwest Walk-In, while its detailed first-come, first-served section also lists Warner Valley. Opening dates, road access, and operations remain subject to weather, road status, and public safety.",
          "observation_id": "observation-nps-lassen-camping-20260922",
          "observed_at": null,
          "observer": "",
          "retrieved_at": "2026-09-22T19:00:00+00:00",
          "source_id": "source-nps-lassen-camping"
        }
      ],
      "sources": [
        {
          "locator": "https://www.nps.gov/lavo/planyourvisit/camping-in-campgrounds.htm",
          "publisher": "National Park Service",
          "source_id": "source-nps-lassen-camping"
        }
      ]
    }
  ],
  "entities": [
    {
      "entity_id": "campgrounds-lassen-developed",
      "kind": "campground_collection",
      "name": "Lassen Volcanic developed campgrounds"
    }
  ],
  "history": [
    {
      "action": "ADD",
      "change_set_id": "wp-20260922-lassen-nps-foundation",
      "evidence_refs": [],
      "knowledge_gap_refs": [],
      "path": "canonical/v0/observations/observation-nps-lassen-camping-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-camping-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-lassen-cinder-cone-map-20210331-20260923",
    "position": 851,
    "previous_id": "observation-nps-lassen-bumpass-hell-trail-20260923",
    "total": 1318
  },
  "observations": [
    {
      "artifact_refs": [],
      "content": "NPS publishes a campground collection, site counts, and fees. Its reservation summary says reservations are required except at Juniper Lake and Southwest Walk-In, while its detailed first-come, first-served section also lists Warner Valley. Opening dates, road access, and operations remain subject to weather, road status, and public safety.",
      "observation_id": "observation-nps-lassen-camping-20260922",
      "observed_at": null,
      "observer": "",
      "retrieved_at": "2026-09-22T19:00:00+00:00",
      "source_id": "source-nps-lassen-camping"
    }
  ],
  "record": {
    "artifact_refs": [],
    "content": "NPS publishes a campground collection, site counts, and fees. Its reservation summary says reservations are required except at Juniper Lake and Southwest Walk-In, while its detailed first-come, first-served section also lists Warner Valley. Opening dates, road access, and operations remain subject to weather, road status, and public safety.",
    "observation_id": "observation-nps-lassen-camping-20260922",
    "observed_at": null,
    "observer": "",
    "retrieved_at": "2026-09-22T19:00:00+00:00",
    "source_id": "source-nps-lassen-camping"
  },
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  "related_records": [],
  "sources": [
    {
      "locator": "https://www.nps.gov/lavo/planyourvisit/camping-in-campgrounds.htm",
      "publisher": "National Park Service",
      "source_id": "source-nps-lassen-camping"
    }
  ]
}