{
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      "observations": [
        {
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        "name": "Bumpass Hell trailhead to basin approach junction"
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    },
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      ],
      "observations": [
        {
          "artifact_refs": [],
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          "observation_id": "observation-nps-lassen-trail-conditions-20260923",
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      ],
      "observations": [
        {
          "artifact_refs": [],
          "content": "NPS describes the usual Bumpass Hell hike as a three-mile round trip from the Bumpass Hell parking area: the first mile is mostly flat, the trail then drops into the basin, and a boardwalk provides close views. A second trail skirts the north edge and continues to a second overlook; most hikers return from there. The page also says the basin is accessible by a trail from Kings Creek. Within the same page, the parking area is described as both seven and eight miles from the Southwest Entrance, duration as two hours and 90 minutes, descent as 200 and 300 feet, and surface as packed gravel and hardpacked dirt and rock.",
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          "round_trip_time_hours": 2,
          "typical_season": "approximately late July through October"
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        {
          "artifact_refs": [],
          "content": "Bumpass Hell Trail starts at Bumpass Hell parking seven miles from the Southwest Entrance; it is a three-mile round trip taking about two hours and is generally available only in late summer and fall. Parking is limited.",
          "observation_id": "observation-nps-lassen-bumpass-hell-trail-20260923",
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      ],
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        "name": "Bumpass Hell Trail"
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      "observations": [
        {
          "artifact_refs": [],
          "content": "NPS describes the usual Bumpass Hell hike as a three-mile round trip from the Bumpass Hell parking area: the first mile is mostly flat, the trail then drops into the basin, and a boardwalk provides close views. A second trail skirts the north edge and continues to a second overlook; most hikers return from there. The page also says the basin is accessible by a trail from Kings Creek. Within the same page, the parking area is described as both seven and eight miles from the Southwest Entrance, duration as two hours and 90 minutes, descent as 200 and 300 feet, and surface as packed gravel and hardpacked dirt and rock.",
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          "observations": [
            {
              "artifact_refs": [],
              "content": "NPS describes the usual Bumpass Hell hike as a three-mile round trip from the Bumpass Hell parking area: the first mile is mostly flat, the trail then drops into the basin, and a boardwalk provides close views. A second trail skirts the north edge and continues to a second overlook; most hikers return from there. The page also says the basin is accessible by a trail from Kings Creek. Within the same page, the parking area is described as both seven and eight miles from the Southwest Entrance, duration as two hours and 90 minutes, descent as 200 and 300 feet, and surface as packed gravel and hardpacked dirt and rock.",
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          "change_set_id": "wp-20260923-lassen-bumpass-route-graph",
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        }
      ],
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        "previous_id": "gap-las-trampas-corral-booking-product",
        "total": 299
      },
      "observations": [
        {
          "artifact_refs": [],
          "content": "NPS describes the usual Bumpass Hell hike as a three-mile round trip from the Bumpass Hell parking area: the first mile is mostly flat, the trail then drops into the basin, and a boardwalk provides close views. A second trail skirts the north edge and continues to a second overlook; most hikers return from there. The page also says the basin is accessible by a trail from Kings Creek. Within the same page, the parking area is described as both seven and eight miles from the Southwest Entrance, duration as two hours and 90 minutes, descent as 200 and 300 feet, and surface as packed gravel and hardpacked dirt and rock.",
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      ],
      "path": "canonical/v0/claims/claim-bumpass-hell-source-profile-variations.json",
      "reason": "Publish the official distance-bearing Bumpass Hell parking-to-basin approach, while preserving boardwalk, alternate-route, and source-profile uncertainty.",
      "record_id": "claim-bumpass-hell-source-profile-variations",
      "record_type": "claim",
      "summary": "Add the official distance-bearing Bumpass Hell parking-to-basin approach, preserve source-page profile conflicts, and defer boardwalk and alternate-route choices explicitly."
    }
  ],
  "journey": [
    {
      "claims": [
        {
          "claim": {
            "claim_id": "claim-lassen-current-conditions-recheck",
            "evidence_ids": [
              "evidence-lassen-current-conditions-recheck"
            ],
            "predicate": "pretrip_current_conditions_recheck",
            "spatial_scope_ids": [
              "scope-lassen-national-park"
            ],
            "subject_id": "park-lassen-volcanic-national-park",
            "temporal_scope": null,
            "value": {
              "required": true,
              "topics": [
                "alerts_and_closures",
                "roads",
                "trails",
                "fire_and_smoke",
                "snow",
                "facilities"
              ]
            }
          },
          "evidence": [
            {
              "claim_id": "claim-lassen-current-conditions-recheck",
              "evidence_id": "evidence-lassen-current-conditions-recheck",
              "notes": "",
              "observation_id": "observation-nps-lassen-conditions-20260922",
              "stance": "supports"
            }
          ],
          "observations": [
            {
              "artifact_refs": [],
              "content": "The current-conditions page is the operational source for alerts, roads, trails, fire and smoke, snow, facilities, and closures.",
              "observation_id": "observation-nps-lassen-conditions-20260922",
              "observed_at": null,
              "observer": "",
              "retrieved_at": "2026-09-22T19:00:00+00:00",
              "source_id": "source-nps-lassen-conditions"
            }
          ],
          "sources": [
            {
              "locator": "https://www.nps.gov/lavo/planyourvisit/conditions.htm",
              "publisher": "National Park Service",
              "source_id": "source-nps-lassen-conditions"
            }
          ],
          "subject": {
            "entity_id": "park-lassen-volcanic-national-park",
            "kind": "national_park",
            "name": "Lassen Volcanic National Park"
          }
        }
      ],
      "entity": {
        "entity_id": "park-lassen-volcanic-national-park",
        "kind": "national_park",
        "name": "Lassen Volcanic National Park"
      },
      "gaps": [
        {
          "gap_id": "gap-lassen-current-conditions",
          "question": "What road, trail, fire, smoke, snow, facility, and area conditions will apply near departure?",
          "reason": "Dynamic operating conditions are intentionally not frozen; recheck the official NPS current-conditions page near departure.",
          "related_ids": [
            "claim-lassen-current-conditions-recheck"
          ]
        }
      ],
      "relationships": [
        {
          "evidence_ids": [
            "evidence-bumpass-hell-trail-profile"
          ],
          "object_id": "park-lassen-volcanic-national-park",
          "predicate": "traverses",
          "relationship_id": "relationship-route-bumpass-hell-trail-traverses-lassen",
          "subject_id": "route-bumpass-hell-trail",
          "temporal_scope": null
        }
      ],
      "role": "Traversed place"
    }
  ],
  "knowledge_gaps": [
    {
      "gap_id": "gap-lassen-bumpass-full-basin-circulation",
      "question": "What exact boardwalk circulation and Kings Creek alternative should a complete Bumpass Hell visitor traversal use?",
      "reason": "The official dataset supports a connected 1.29564925-mile approach from the Bumpass Hell parking area to the basin entry. Separate boardwalk branches and a trail continuing east share the basin endpoint, while NPS describes a second overlook and a Kings Creek alternative without an unambiguous atomic visitor path in this batch. The published three-mile round-trip profile may include basin circulation not represented by the two approach features, so Wayproof does not force their values to match.",
      "related_ids": [
        "route-bumpass-hell-trail",
        "hydrothermal-area-bumpass-hell",
        "claim-bumpass-hell-basin-route-description"
      ]
    },
    {
      "gap_id": "gap-lassen-bumpass-source-profile-conflicts",
      "question": "Which Bumpass Hell access distance, duration, descent, and surface description should a traveler rely on?",
      "reason": "The current NPS page publishes internally different values or descriptions for distance from the Southwest Entrance, duration, descent, and trail surface. Wayproof preserves those variations rather than silently selecting one.",
      "related_ids": [
        "route-bumpass-hell-trail",
        "claim-bumpass-hell-source-profile-variations"
      ]
    },
    {
      "gap_id": "gap-lassen-specific-route-topology",
      "question": "What exact segment traversal connects each remaining published Lassen trailhead and destination, including shared junctions and alternatives?",
      "reason": "Wayproof publishes complete, bidirectional, distance-bearing trailhead-to-summit approaches for Lassen Peak and Brokeoff Mountain, plus a bounded summit approach for Cinder Cone; a connected distance-bearing parking-to-basin-entry graph for Bumpass Hell; and the atomic shared approach plus around-lake network for Boiling Springs Lake. Cinder Cone rim/crater circulation and the full Bumpass basin circulation remain explicit route-specific gaps. It also publishes ordered, bidirectional Warner Valley topology for Devils Kitchen and Terminal Geyser, but atomic leg distances remain unknown where route descriptions print only cumulative positions. These remaining questions still require route-specific reconciliation.",
      "related_ids": [
        "claim-lassen-trail-conditions-recheck",
        "route-devils-kitchen-trail",
        "route-terminal-geyser-trail"
      ]
    }
  ],
  "reference_evidence": [],
  "relationships": [
    {
      "evidence_ids": [
        "evidence-bumpass-hell-trail-profile"
      ],
      "object_id": "route-bumpass-hell-trail",
      "predicate": "approached_via",
      "relationship_id": "relationship-hydrothermal-area-bumpass-hell-approached-via-route-bumpass-hell-trail",
      "subject_id": "hydrothermal-area-bumpass-hell",
      "temporal_scope": null
    },
    {
      "evidence_ids": [
        "evidence-bumpass-hell-basin-route-description"
      ],
      "object_id": "hydrothermal-area-bumpass-hell",
      "predicate": "ends_at",
      "relationship_id": "relationship-route-bumpass-hell-trail-ends-at-bumpass-hell",
      "subject_id": "route-bumpass-hell-trail",
      "temporal_scope": null
    },
    {
      "evidence_ids": [
        "evidence-route-segment-bumpass-basin-approach-entry"
      ],
      "object_id": "route-bumpass-hell-trail",
      "predicate": "part_of",
      "relationship_id": "relationship-route-segment-bumpass-basin-approach-entry-part-of",
      "subject_id": "route-segment-bumpass-basin-approach-entry",
      "temporal_scope": null
    },
    {
      "evidence_ids": [
        "evidence-route-segment-bumpass-trailhead-basin-approach"
      ],
      "object_id": "route-bumpass-hell-trail",
      "predicate": "part_of",
      "relationship_id": "relationship-route-segment-bumpass-trailhead-basin-approach-part-of",
      "subject_id": "route-segment-bumpass-trailhead-basin-approach",
      "temporal_scope": null
    },
    {
      "evidence_ids": [
        "evidence-bumpass-hell-trail-profile"
      ],
      "object_id": "trailhead-bumpass-hell",
      "predicate": "starts_at",
      "relationship_id": "relationship-route-bumpass-hell-trail-starts-at-trailhead-bumpass-hell",
      "subject_id": "route-bumpass-hell-trail",
      "temporal_scope": null
    },
    {
      "evidence_ids": [
        "evidence-bumpass-hell-trail-profile"
      ],
      "object_id": "park-lassen-volcanic-national-park",
      "predicate": "traverses",
      "relationship_id": "relationship-route-bumpass-hell-trail-traverses-lassen",
      "subject_id": "route-bumpass-hell-trail",
      "temporal_scope": null
    }
  ],
  "route_geometry": null,
  "route_geometry_url": null,
  "type": "canonical_entity"
}