{
  "claims": [
    {
      "claim": {
        "claim_id": "claim-ohlone-map-cartography",
        "evidence_ids": [
          "evidence-ohlone-map-cartography"
        ],
        "predicate": "map_cartography",
        "spatial_scope_ids": [
          "scope-ohlone-wilderness-trail"
        ],
        "subject_id": "trail-ohlone-wilderness",
        "temporal_scope": {
          "ends_on": null,
          "starts_on": "2025-08-01"
        },
        "value": {
          "contour_interval_feet": 40,
          "inches_to_miles": 0.45,
          "scale": "1:28,750"
        }
      },
      "evidence": [
        {
          "claim_id": "claim-ohlone-map-cartography",
          "evidence_id": "evidence-ohlone-map-cartography",
          "notes": "",
          "observation_id": "observation-ohlone-map-rose-peak",
          "stance": "supports"
        }
      ],
      "observations": [
        {
          "artifact_refs": [
            "PDF page 1"
          ],
          "content": "The map labels Rose Peak at 3,817 feet and uses a 1:28,750 scale with 40-foot contour intervals.",
          "observation_id": "observation-ohlone-map-rose-peak",
          "observed_at": "2025-08-01T00:00:00+00:00",
          "observer": "Wayproof source review",
          "retrieved_at": "2026-09-20T00:00:00+00:00",
          "source_id": "source-ebrpd-ohlone-wilderness-map-2025-08"
        }
      ],
      "sources": [
        {
          "locator": "https://www.ebparks.org/sites/default/files/Ohlone-Wilderness-Permit-Map-11x17.pdf",
          "publisher": "East Bay Regional Park District",
          "source_id": "source-ebrpd-ohlone-wilderness-map-2025-08"
        }
      ]
    },
    {
      "claim": {
        "claim_id": "claim-rose-peak-ohlone",
        "evidence_ids": [
          "evidence-rose-peak-ohlone",
          "evidence-ohlone-map-rose-peak"
        ],
        "predicate": "published_elevation_feet",
        "spatial_scope_ids": [
          "scope-ohlone-wilderness-preserve"
        ],
        "subject_id": "peak-rose",
        "temporal_scope": null,
        "value": 3817
      },
      "evidence": [
        {
          "claim_id": "claim-rose-peak-ohlone",
          "evidence_id": "evidence-rose-peak-ohlone",
          "notes": "",
          "observation_id": "observation-ebrpd-ohlone-identity",
          "stance": "supports"
        },
        {
          "claim_id": "claim-rose-peak-ohlone",
          "evidence_id": "evidence-ohlone-map-rose-peak",
          "notes": "",
          "observation_id": "observation-ohlone-map-rose-peak",
          "stance": "supports"
        }
      ],
      "observations": [
        {
          "artifact_refs": [],
          "content": "The official page describes a 9,737-acre preserve accessible only via the Ohlone Wilderness Trail, with 3,817-foot Rose Peak as its centerpiece.",
          "observation_id": "observation-ebrpd-ohlone-identity",
          "observed_at": null,
          "observer": "Wayproof source review",
          "retrieved_at": "2026-09-20T00:00:00+00:00",
          "source_id": "source-ebrpd-ohlone-park-page"
        },
        {
          "artifact_refs": [
            "PDF page 1"
          ],
          "content": "The map labels Rose Peak at 3,817 feet and uses a 1:28,750 scale with 40-foot contour intervals.",
          "observation_id": "observation-ohlone-map-rose-peak",
          "observed_at": "2025-08-01T00:00:00+00:00",
          "observer": "Wayproof source review",
          "retrieved_at": "2026-09-20T00:00:00+00:00",
          "source_id": "source-ebrpd-ohlone-wilderness-map-2025-08"
        }
      ],
      "sources": [
        {
          "locator": "https://www.ebparks.org/parks/ohlone",
          "publisher": "East Bay Regional Park District",
          "source_id": "source-ebrpd-ohlone-park-page"
        },
        {
          "locator": "https://www.ebparks.org/sites/default/files/Ohlone-Wilderness-Permit-Map-11x17.pdf",
          "publisher": "East Bay Regional Park District",
          "source_id": "source-ebrpd-ohlone-wilderness-map-2025-08"
        }
      ]
    }
  ],
  "entities": [
    {
      "entity_id": "peak-rose",
      "kind": "peak",
      "name": "Rose Peak"
    },
    {
      "entity_id": "trail-ohlone-wilderness",
      "kind": "trail",
      "name": "Ohlone Wilderness Trail"
    }
  ],
  "history": [
    {
      "action": "ADD",
      "change_set_id": "wp-20260920-ebrpd-ohlone-map-2025-08",
      "evidence_refs": [],
      "knowledge_gap_refs": [],
      "path": "canonical/v0/observations/observation-ohlone-map-rose-peak.json",
      "reason": "Add the August 2025 Ohlone map as dated spatial evidence without reviving its obsolete permit title.",
      "record_id": "observation-ohlone-map-rose-peak",
      "record_type": "observation",
      "summary": "Ingest the August 2025 Ohlone map as spatial evidence while bounding its permit-era title."
    }
  ],
  "navigation": {
    "next_id": "observation-ohlone-map-route-graph-pilot",
    "position": 948,
    "previous_id": "observation-ohlone-map-restrictions",
    "total": 1318
  },
  "observations": [
    {
      "artifact_refs": [
        "PDF page 1"
      ],
      "content": "The map labels Rose Peak at 3,817 feet and uses a 1:28,750 scale with 40-foot contour intervals.",
      "observation_id": "observation-ohlone-map-rose-peak",
      "observed_at": "2025-08-01T00:00:00+00:00",
      "observer": "Wayproof source review",
      "retrieved_at": "2026-09-20T00:00:00+00:00",
      "source_id": "source-ebrpd-ohlone-wilderness-map-2025-08"
    }
  ],
  "record": {
    "artifact_refs": [
      "PDF page 1"
    ],
    "content": "The map labels Rose Peak at 3,817 feet and uses a 1:28,750 scale with 40-foot contour intervals.",
    "observation_id": "observation-ohlone-map-rose-peak",
    "observed_at": "2025-08-01T00:00:00+00:00",
    "observer": "Wayproof source review",
    "retrieved_at": "2026-09-20T00:00:00+00:00",
    "source_id": "source-ebrpd-ohlone-wilderness-map-2025-08"
  },
  "record_type": "observation",
  "related_records": [],
  "sources": [
    {
      "locator": "https://www.ebparks.org/sites/default/files/Ohlone-Wilderness-Permit-Map-11x17.pdf",
      "publisher": "East Bay Regional Park District",
      "source_id": "source-ebrpd-ohlone-wilderness-map-2025-08"
    }
  ]
}