{
  "answerability": "evidence_backed_claims_available",
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          "longitude": -119.0213906605332,
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          "provenance": "official_usfs_recreation_point",
          "source_feature_id": "USFS recreation area 20494",
          "source_ids": [
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          ]
        }
      },
      "evidence": [
        {
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          "evidence_id": "evidence-horseshoe-lake-trailhead-map-point",
          "notes": "",
          "observation_id": "observation-usfs-mammoth-pass-trailhead-point-20260925",
          "stance": "supports"
        }
      ],
      "observations": [
        {
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            "bd479aa6c98a9ee32914499758ff0951e0730b025cc113a937e2a2f53e07c972"
          ],
          "content": "The Forest Service Recreation Opportunities service publishes Mammoth Pass Trailhead, recreation area 20494, at Horseshoe Lake.",
          "observation_id": "observation-usfs-mammoth-pass-trailhead-point-20260925",
          "observed_at": null,
          "observer": "",
          "retrieved_at": "2026-09-25T19:00:00+00:00",
          "source_id": "source-usfs-recreation-opportunities-eastern-sierra-20260925"
        }
      ],
      "sources": [
        {
          "locator": "https://apps.fs.usda.gov/arcx/rest/services/EDW/EDW_RecreationOpportunities_01/MapServer/0",
          "publisher": "USDA Forest Service",
          "source_id": "source-usfs-recreation-opportunities-eastern-sierra-20260925"
        }
      ],
      "subject": {
        "entity_id": "trailhead-horseshoe-lake-mammoth",
        "kind": "trailhead",
        "name": "Horseshoe Lake Trailhead"
      }
    },
    {
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            "overflow": "unknown",
            "present": true
          },
          "potable_water": {
            "status": "unknown"
          },
          "road_access": {
            "surface": "paved"
          },
          "route_connector": {
            "description": "Official map and Town plan depict trail access from the established trailhead and parking lot.",
            "exact_geometry": "unresolved",
            "status": "depicted"
          },
          "toilets": {
            "present": true,
            "type": "unknown"
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      },
      "evidence": [
        {
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          "stance": "supports"
        },
        {
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          "evidence_id": "evidence-trailhead-horseshoe-lake-operational-profile-town",
          "notes": "",
          "observation_id": "observation-town-horseshoe-lake-trailhead-operations-20260925",
          "stance": "supports"
        }
      ],
      "observations": [
        {
          "artifact_refs": [
            "Mammoth Lakes area map"
          ],
          "content": "The official Forest Service map depicts Mammoth Pass Trailhead at Horseshoe Lake on a paved-road approach; the map states that trailheads have restrooms unless marked otherwise, and this trailhead is not marked NO RR. The map does not publish parking capacity, overflow arrangements, or potable-water service.",
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          "observer": "",
          "retrieved_at": "2026-09-25T22:00:00+00:00",
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        },
        {
          "artifact_refs": [
            "Mammoth Lakes Walk, Bike, Ride draft 1.0"
          ],
          "content": "The Town plan identifies the existing Horseshoe Lake trailhead and parking lot with trail and vehicular access. The conceptual hub diagram also identifies restrooms. It does not publish parking capacity, overflow arrangements, or potable-water service.",
          "observation_id": "observation-town-horseshoe-lake-trailhead-operations-20260925",
          "observed_at": null,
          "observer": "",
          "retrieved_at": "2026-09-25T22:00:00+00:00",
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        }
      ],
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        {
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        },
        {
          "locator": "https://www.townofmammothlakes.ca.gov/DocumentCenter/View/6459/20170302_MammothLakes_WalkBikeRide_Draft10?bidId=",
          "publisher": "Town of Mammoth Lakes",
          "source_id": "source-town-mammoth-lakes-walk-bike-ride-2017"
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      ],
      "subject": {
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        "name": "Horseshoe Lake Trailhead"
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    },
    {
      "claim": {
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          "ends_on": "2026-09-25",
          "starts_on": "2026-09-03"
        },
        "value": {
          "as_of": "2026-09-03",
          "lake_mary_road": "open",
          "lakes_basin_multi_use_paths": "open",
          "lakes_basin_road": "open",
          "potable_water_current_status": "not_stated",
          "restroom_current_status": "not_stated",
          "retrieved_on": "2026-09-25"
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      },
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        {
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          "notes": "",
          "observation_id": "observation-town-mammoth-lakes-basin-status-20260925",
          "stance": "supports"
        }
      ],
      "observations": [
        {
          "artifact_refs": [],
          "content": "The Town status page, last updated September 3, 2026, reports Lake Mary Road, the Lakes Basin multi-use paths, and Lakes Basin Road open. It does not report current potable-water or Horseshoe Lake restroom status.",
          "observation_id": "observation-town-mammoth-lakes-basin-status-20260925",
          "observed_at": null,
          "observer": "",
          "retrieved_at": "2026-09-25T19:00:00+00:00",
          "source_id": "source-town-mammoth-lakes-parks-status-20260925"
        }
      ],
      "sources": [
        {
          "locator": "https://www.townofmammothlakes.ca.gov/228/Parks-and-Facilities-Update",
          "publisher": "Town of Mammoth Lakes",
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      ],
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        "entity_id": "trailhead-horseshoe-lake-mammoth",
        "kind": "trailhead",
        "name": "Horseshoe Lake Trailhead"
      }
    }
  ],
  "entity": {
    "entity_id": "trailhead-horseshoe-lake-mammoth",
    "kind": "trailhead",
    "name": "Horseshoe Lake Trailhead"
  },
  "gap_details": [
    {
      "claims": [],
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        {
          "entity_id": "route-mcleod-lake",
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          "name": "McLeod Lake Trail"
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          "entity_id": "trailhead-horseshoe-lake-mammoth",
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        {
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        },
        {
          "action": "ADD",
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          "reason": "Publish reviewed East Side access points without inferring access from proximity.",
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          "record_type": "gap",
          "summary": "Publish 13 evidenced East Side trail access points and preserve three unresolved connector or identity questions."
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      ],
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      },
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      "sources": []
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    {
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      ],
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        {
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      "knowledge_gap_refs": [],
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      "summary": "Add source-backed Eastern Sierra foliage-hike trailheads, managing areas, route associations, published distances and hazards, plus explicit research and pre-trip gaps."
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    }
  ],
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    {
      "gap_id": "gap-trailhead-horseshoe-lake-mammoth-map-point",
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    },
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    {
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      "object_id": "trailhead-horseshoe-lake-mammoth",
      "predicate": "manages",
      "relationship_id": "relationship-inyo-manages-horseshoe-trailhead",
      "subject_id": "agency-inyo-national-forest",
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    }
  ],
  "route_geometry": null,
  "route_geometry_url": null,
  "type": "canonical_entity"
}