{
  "claims": [
    {
      "claim": {
        "claim_id": "claim-google-maps-ohlone-lichen-bark-start-coordinate",
        "evidence_ids": [
          "evidence-google-maps-ohlone-lichen-bark-360"
        ],
        "predicate": "third_party_start_coordinate",
        "spatial_scope_ids": [
          "scope-ohlone-wilderness-trail"
        ],
        "subject_id": "trailhead-ohlone-lichen-bark",
        "temporal_scope": null,
        "value": {
          "imagery_month": "2015-03",
          "latitude": 37.5787566,
          "longitude": -121.6974062,
          "provenance_class": "user_supplied_google_maps_360"
        }
      },
      "evidence": [
        {
          "claim_id": "claim-google-maps-ohlone-lichen-bark-start-coordinate",
          "evidence_id": "evidence-google-maps-ohlone-lichen-bark-360",
          "notes": "Third-party imagery coordinate; not a surveyed EBRPD coordinate.",
          "observation_id": "observation-google-maps-ohlone-lichen-bark-360",
          "stance": "supports"
        }
      ],
      "observations": [
        {
          "artifact_refs": [],
          "content": "The user-supplied Google Maps 360 link resolves to contributor imagery at 37.5787566, -121.6974062 near the Lichen Bark parking and path complex. Google labels the imagery March 2015. This is a practical third-party start coordinate, not an EBRPD survey point and not evidence of current facility operation.",
          "observation_id": "observation-google-maps-ohlone-lichen-bark-360",
          "observed_at": "2015-03-01T00:00:00+00:00",
          "observer": "Google Maps contributor imagery supplied by user",
          "retrieved_at": "2026-09-20T00:00:00+00:00",
          "source_id": "source-google-maps-ohlone-lichen-bark-360"
        }
      ],
      "sources": [
        {
          "locator": "https://maps.app.goo.gl/imRm3GCJrx8g9T6r6",
          "publisher": "Google Maps contributor imagery",
          "source_id": "source-google-maps-ohlone-lichen-bark-360"
        }
      ]
    }
  ],
  "entities": [
    {
      "entity_id": "trailhead-ohlone-lichen-bark",
      "kind": "trailhead",
      "name": "Lichen Bark Ohlone Trailhead"
    }
  ],
  "history": [
    {
      "action": "ADD",
      "change_set_id": "wp-20260920-ohlone-route-graph-pilot",
      "evidence_refs": [],
      "knowledge_gap_refs": [],
      "path": "canonical/v0/observations/observation-google-maps-ohlone-lichen-bark-360.json",
      "reason": "Publish a source-grounded route-graph pilot with official mainline, alternate routes, facility access, printed mileage, derived detours, and explicit gaps.",
      "record_id": "observation-google-maps-ohlone-lichen-bark-360",
      "record_type": "observation",
      "summary": "Add an Ohlone route-graph pilot for Lichen Bark and OT26-OT35, including official and alternate segments, facilities, printed mileage, derived detours, and explicit completeness/current-status gaps."
    }
  ],
  "navigation": {
    "next_id": "observation-google-maps-ohlone-maggies-half-acre-coordinate",
    "position": 826,
    "previous_id": "observation-google-maps-ohlone-eagle-spring-backpack-camp-coordinate",
    "total": 1318
  },
  "observations": [
    {
      "artifact_refs": [],
      "content": "The user-supplied Google Maps 360 link resolves to contributor imagery at 37.5787566, -121.6974062 near the Lichen Bark parking and path complex. Google labels the imagery March 2015. This is a practical third-party start coordinate, not an EBRPD survey point and not evidence of current facility operation.",
      "observation_id": "observation-google-maps-ohlone-lichen-bark-360",
      "observed_at": "2015-03-01T00:00:00+00:00",
      "observer": "Google Maps contributor imagery supplied by user",
      "retrieved_at": "2026-09-20T00:00:00+00:00",
      "source_id": "source-google-maps-ohlone-lichen-bark-360"
    }
  ],
  "record": {
    "artifact_refs": [],
    "content": "The user-supplied Google Maps 360 link resolves to contributor imagery at 37.5787566, -121.6974062 near the Lichen Bark parking and path complex. Google labels the imagery March 2015. This is a practical third-party start coordinate, not an EBRPD survey point and not evidence of current facility operation.",
    "observation_id": "observation-google-maps-ohlone-lichen-bark-360",
    "observed_at": "2015-03-01T00:00:00+00:00",
    "observer": "Google Maps contributor imagery supplied by user",
    "retrieved_at": "2026-09-20T00:00:00+00:00",
    "source_id": "source-google-maps-ohlone-lichen-bark-360"
  },
  "record_type": "observation",
  "related_records": [],
  "sources": [
    {
      "locator": "https://maps.app.goo.gl/imRm3GCJrx8g9T6r6",
      "publisher": "Google Maps contributor imagery",
      "source_id": "source-google-maps-ohlone-lichen-bark-360"
    }
  ]
}