{
  "claims": [
    {
      "claim": {
        "claim_id": "claim-route-segment-bumpass-basin-approach-entry",
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        ],
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        ],
        "subject_id": "route-segment-bumpass-basin-approach-entry",
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        "value": {
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          "dataset_feature_id": "bb47380f-f9c1-43dc-b734-cdc1435cf00b",
          "dataset_feature_name": "Bumpass Hell Trail",
          "dataset_field": "lengthmiles",
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          "distance_status": "known",
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            "longitude": -121.5023271
          },
          "operational_status_requires_current_check": true,
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          "source_data_description": "NPS Trails 11/2019",
          "source_load_date": "2024-09-04T08:26:58.000",
          "source_mode_attributes": {
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            "hiker_pedestrian": "Yes",
            "pack_saddle": "No"
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      },
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          "claim_id": "claim-route-segment-bumpass-basin-approach-entry",
          "evidence_id": "evidence-route-segment-bumpass-basin-approach-entry",
          "notes": "",
          "observation_id": "observation-usgs-topo-vector-bumpass-trails-20250729-20260923",
          "stance": "supports"
        }
      ],
      "observations": [
        {
          "artifact_refs": [],
          "content": "In the USGS Topo Map Vector Data product 25034 Lassen Peak CA, NPS-originated Bumpass Hell Trail feature d0d63ec3-c99c-41e0-a353-50ac64f4fff8 runs from (-121.5140219, 40.4661208) to (-121.5027609, 40.4571800) with lengthmiles 1.26580720. Feature bb47380f-f9c1-43dc-b734-cdc1435cf00b continues from that exact endpoint to (-121.5023271, 40.4573718) with lengthmiles 0.02984205, where it shares an endpoint with a Bumpass Hell Boardwalk feature and a separate Bumpass Hell Trail feature continuing east. The trail features identify National Park Service as source originator and NPS Trails 11/2019 as their source-data description; the dataset warns that temporal changes may have occurred.",
          "observation_id": "observation-usgs-topo-vector-bumpass-trails-20250729-20260923",
          "observed_at": null,
          "observer": "",
          "retrieved_at": "2026-09-23T21:00:00+00:00",
          "source_id": "source-usgs-topo-vector-lassen-peak-20250729"
        }
      ],
      "sources": [
        {
          "locator": "https://prd-tnm.s3.amazonaws.com/StagedProducts/TopoMapVector/CA/GPKG/VECTOR_Lassen_Peak_CA_7_5_Min_GPKG.gpkg",
          "publisher": "U.S. Geological Survey",
          "source_id": "source-usgs-topo-vector-lassen-peak-20250729"
        }
      ]
    },
    {
      "claim": {
        "claim_id": "claim-route-segment-bumpass-trailhead-basin-approach",
        "evidence_ids": [
          "evidence-route-segment-bumpass-trailhead-basin-approach"
        ],
        "predicate": "official_dataset_route_segment",
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        ],
        "subject_id": "route-segment-bumpass-trailhead-basin-approach",
        "temporal_scope": null,
        "value": {
          "coordinate_reference_system": "EPSG:4269",
          "dataset_feature_id": "d0d63ec3-c99c-41e0-a353-50ac64f4fff8",
          "dataset_feature_name": "Bumpass Hell Trail",
          "dataset_field": "lengthmiles",
          "distance_miles": 1.2658072,
          "distance_status": "known",
          "end_coordinate": {
            "latitude": 40.45718,
            "longitude": -121.5027609
          },
          "operational_status_requires_current_check": true,
          "route_role": "official_mainline",
          "source_data_description": "NPS Trails 11/2019",
          "source_load_date": "2022-01-14T10:16:12.000",
          "source_mode_attributes": {
            "bicycle": "No",
            "hiker_pedestrian": "Yes",
            "pack_saddle": "No"
          },
          "source_originator": "National Park Service",
          "start_coordinate": {
            "latitude": 40.4661208,
            "longitude": -121.5140219
          }
        }
      },
      "evidence": [
        {
          "claim_id": "claim-route-segment-bumpass-trailhead-basin-approach",
          "evidence_id": "evidence-route-segment-bumpass-trailhead-basin-approach",
          "notes": "",
          "observation_id": "observation-usgs-topo-vector-bumpass-trails-20250729-20260923",
          "stance": "supports"
        }
      ],
      "observations": [
        {
          "artifact_refs": [],
          "content": "In the USGS Topo Map Vector Data product 25034 Lassen Peak CA, NPS-originated Bumpass Hell Trail feature d0d63ec3-c99c-41e0-a353-50ac64f4fff8 runs from (-121.5140219, 40.4661208) to (-121.5027609, 40.4571800) with lengthmiles 1.26580720. Feature bb47380f-f9c1-43dc-b734-cdc1435cf00b continues from that exact endpoint to (-121.5023271, 40.4573718) with lengthmiles 0.02984205, where it shares an endpoint with a Bumpass Hell Boardwalk feature and a separate Bumpass Hell Trail feature continuing east. The trail features identify National Park Service as source originator and NPS Trails 11/2019 as their source-data description; the dataset warns that temporal changes may have occurred.",
          "observation_id": "observation-usgs-topo-vector-bumpass-trails-20250729-20260923",
          "observed_at": null,
          "observer": "",
          "retrieved_at": "2026-09-23T21:00:00+00:00",
          "source_id": "source-usgs-topo-vector-lassen-peak-20250729"
        }
      ],
      "sources": [
        {
          "locator": "https://prd-tnm.s3.amazonaws.com/StagedProducts/TopoMapVector/CA/GPKG/VECTOR_Lassen_Peak_CA_7_5_Min_GPKG.gpkg",
          "publisher": "U.S. Geological Survey",
          "source_id": "source-usgs-topo-vector-lassen-peak-20250729"
        }
      ]
    }
  ],
  "entities": [
    {
      "entity_id": "route-segment-bumpass-basin-approach-entry",
      "kind": "route_segment",
      "name": "Bumpass Hell basin approach junction to basin entry"
    },
    {
      "entity_id": "route-segment-bumpass-trailhead-basin-approach",
      "kind": "route_segment",
      "name": "Bumpass Hell trailhead to basin approach junction"
    }
  ],
  "history": [
    {
      "action": "ADD",
      "change_set_id": "wp-20260923-lassen-bumpass-route-graph",
      "evidence_refs": [
        "evidence-route-segment-bumpass-trailhead-basin-approach",
        "evidence-route-segment-bumpass-basin-approach-entry",
        "evidence-bumpass-hell-basin-route-description",
        "evidence-bumpass-hell-source-profile-variations"
      ],
      "knowledge_gap_refs": [
        "gap-lassen-bumpass-full-basin-circulation",
        "gap-lassen-bumpass-source-profile-conflicts",
        "gap-lassen-specific-route-topology"
      ],
      "path": "canonical/v0/observations/observation-usgs-topo-vector-bumpass-trails-20250729-20260923.json",
      "reason": "Publish the official distance-bearing Bumpass Hell parking-to-basin approach, while preserving boardwalk, alternate-route, and source-profile uncertainty.",
      "record_id": "observation-usgs-topo-vector-bumpass-trails-20250729-20260923",
      "record_type": "observation",
      "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."
    }
  ],
  "navigation": {
    "next_id": "observation-usgs-topo-vector-cinder-cone-trails-20250729-20260923",
    "position": 1315,
    "previous_id": "observation-usgs-topo-vector-boiling-springs-trails-20250729-20260923",
    "total": 1318
  },
  "observations": [
    {
      "artifact_refs": [],
      "content": "In the USGS Topo Map Vector Data product 25034 Lassen Peak CA, NPS-originated Bumpass Hell Trail feature d0d63ec3-c99c-41e0-a353-50ac64f4fff8 runs from (-121.5140219, 40.4661208) to (-121.5027609, 40.4571800) with lengthmiles 1.26580720. Feature bb47380f-f9c1-43dc-b734-cdc1435cf00b continues from that exact endpoint to (-121.5023271, 40.4573718) with lengthmiles 0.02984205, where it shares an endpoint with a Bumpass Hell Boardwalk feature and a separate Bumpass Hell Trail feature continuing east. The trail features identify National Park Service as source originator and NPS Trails 11/2019 as their source-data description; the dataset warns that temporal changes may have occurred.",
      "observation_id": "observation-usgs-topo-vector-bumpass-trails-20250729-20260923",
      "observed_at": null,
      "observer": "",
      "retrieved_at": "2026-09-23T21:00:00+00:00",
      "source_id": "source-usgs-topo-vector-lassen-peak-20250729"
    }
  ],
  "record": {
    "artifact_refs": [],
    "content": "In the USGS Topo Map Vector Data product 25034 Lassen Peak CA, NPS-originated Bumpass Hell Trail feature d0d63ec3-c99c-41e0-a353-50ac64f4fff8 runs from (-121.5140219, 40.4661208) to (-121.5027609, 40.4571800) with lengthmiles 1.26580720. Feature bb47380f-f9c1-43dc-b734-cdc1435cf00b continues from that exact endpoint to (-121.5023271, 40.4573718) with lengthmiles 0.02984205, where it shares an endpoint with a Bumpass Hell Boardwalk feature and a separate Bumpass Hell Trail feature continuing east. The trail features identify National Park Service as source originator and NPS Trails 11/2019 as their source-data description; the dataset warns that temporal changes may have occurred.",
    "observation_id": "observation-usgs-topo-vector-bumpass-trails-20250729-20260923",
    "observed_at": null,
    "observer": "",
    "retrieved_at": "2026-09-23T21:00:00+00:00",
    "source_id": "source-usgs-topo-vector-lassen-peak-20250729"
  },
  "record_type": "observation",
  "related_records": [],
  "sources": [
    {
      "locator": "https://prd-tnm.s3.amazonaws.com/StagedProducts/TopoMapVector/CA/GPKG/VECTOR_Lassen_Peak_CA_7_5_Min_GPKG.gpkg",
      "publisher": "U.S. Geological Survey",
      "source_id": "source-usgs-topo-vector-lassen-peak-20250729"
    }
  ]
}