{
  "claims": [
    {
      "claim": {
        "claim_id": "claim-whitney-east-approach",
        "evidence_ids": [
          "evidence-whitney-east-approach-0"
        ],
        "predicate": "east_side_approach_summary",
        "spatial_scope_ids": [
          "scope-peak-mount-whitney"
        ],
        "subject_id": "peak-mount-whitney",
        "temporal_scope": null,
        "value": {
          "mid_july_early_october": "technical climbing equipment usually not necessary",
          "one_way_miles": 10.7,
          "route": "Classic Mount Whitney Trail",
          "spring_early_summer": "ice axe and crampons needed",
          "starts_at": "Whitney Portal",
          "trailhead_elevation_ft": 8360
        }
      },
      "evidence": [
        {
          "claim_id": "claim-whitney-east-approach",
          "evidence_id": "evidence-whitney-east-approach-0",
          "notes": "",
          "observation_id": "observation-nps-seki-whitney-20260923",
          "stance": "supports"
        }
      ],
      "observations": [
        {
          "artifact_refs": [],
          "content": "NPS identifies Mount Whitney as the tallest peak in the lower 48, on the Sequoia National Park–Inyo National Forest boundary. It publishes a 14,505-foot NAVD88 summit elevation, the 10.7-mile Whitney Portal approach, seasonal equipment qualification, and a roughly 60-mile west-side High Sierra Trail approach.",
          "observation_id": "observation-nps-seki-whitney-20260923",
          "observed_at": null,
          "observer": "",
          "retrieved_at": "2026-09-23T01:00:00+00:00",
          "source_id": "source-nps-seki-whitney"
        }
      ],
      "sources": [
        {
          "locator": "https://www.nps.gov/seki/planyourvisit/whitney.htm",
          "publisher": "National Park Service",
          "source_id": "source-nps-seki-whitney"
        }
      ]
    },
    {
      "claim": {
        "claim_id": "claim-whitney-geographic-identity",
        "evidence_ids": [
          "evidence-whitney-geographic-identity-0",
          "evidence-whitney-geographic-identity-3"
        ],
        "predicate": "geographic_identity",
        "spatial_scope_ids": [
          "scope-peak-mount-whitney"
        ],
        "subject_id": "peak-mount-whitney",
        "temporal_scope": null,
        "value": {
          "county_boundary": [
            "Inyo County",
            "Tulare County"
          ],
          "highest_point_of": [
            "California",
            "Sierra Nevada",
            "contiguous United States"
          ],
          "land_boundary": [
            "Sequoia National Park",
            "Inyo National Forest"
          ]
        }
      },
      "evidence": [
        {
          "claim_id": "claim-whitney-geographic-identity",
          "evidence_id": "evidence-whitney-geographic-identity-0",
          "notes": "",
          "observation_id": "observation-nps-seki-whitney-20260923",
          "stance": "supports"
        },
        {
          "claim_id": "claim-whitney-geographic-identity",
          "evidence_id": "evidence-whitney-geographic-identity-3",
          "notes": "",
          "observation_id": "observation-usgs-highest-lowest-elevations-20260923",
          "stance": "supports"
        }
      ],
      "observations": [
        {
          "artifact_refs": [],
          "content": "NPS identifies Mount Whitney as the tallest peak in the lower 48, on the Sequoia National Park–Inyo National Forest boundary. It publishes a 14,505-foot NAVD88 summit elevation, the 10.7-mile Whitney Portal approach, seasonal equipment qualification, and a roughly 60-mile west-side High Sierra Trail approach.",
          "observation_id": "observation-nps-seki-whitney-20260923",
          "observed_at": null,
          "observer": "",
          "retrieved_at": "2026-09-23T01:00:00+00:00",
          "source_id": "source-nps-seki-whitney"
        },
        {
          "artifact_refs": [],
          "content": "The USGS state high-point table identifies Mount Whitney in Inyo–Tulare as California's highest point and publishes an elevation of 14,494 feet.",
          "observation_id": "observation-usgs-highest-lowest-elevations-20260923",
          "observed_at": null,
          "observer": "",
          "retrieved_at": "2026-09-23T01:00:00+00:00",
          "source_id": "source-usgs-highest-lowest-elevations"
        }
      ],
      "sources": [
        {
          "locator": "https://www.nps.gov/seki/planyourvisit/whitney.htm",
          "publisher": "National Park Service",
          "source_id": "source-nps-seki-whitney"
        },
        {
          "locator": "https://www.usgs.gov/educational-resources/highest-and-lowest-elevations",
          "publisher": "U.S. Geological Survey",
          "source_id": "source-usgs-highest-lowest-elevations"
        }
      ]
    },
    {
      "claim": {
        "claim_id": "claim-whitney-nps-elevation",
        "evidence_ids": [
          "evidence-whitney-nps-elevation-0"
        ],
        "predicate": "published_summit_elevation",
        "spatial_scope_ids": [
          "scope-peak-mount-whitney"
        ],
        "subject_id": "peak-mount-whitney",
        "temporal_scope": null,
        "value": {
          "feet": 14505,
          "meters": 4421,
          "publisher": "National Park Service",
          "vertical_datum": "NAVD88"
        }
      },
      "evidence": [
        {
          "claim_id": "claim-whitney-nps-elevation",
          "evidence_id": "evidence-whitney-nps-elevation-0",
          "notes": "",
          "observation_id": "observation-nps-seki-whitney-20260923",
          "stance": "supports"
        }
      ],
      "observations": [
        {
          "artifact_refs": [],
          "content": "NPS identifies Mount Whitney as the tallest peak in the lower 48, on the Sequoia National Park–Inyo National Forest boundary. It publishes a 14,505-foot NAVD88 summit elevation, the 10.7-mile Whitney Portal approach, seasonal equipment qualification, and a roughly 60-mile west-side High Sierra Trail approach.",
          "observation_id": "observation-nps-seki-whitney-20260923",
          "observed_at": null,
          "observer": "",
          "retrieved_at": "2026-09-23T01:00:00+00:00",
          "source_id": "source-nps-seki-whitney"
        }
      ],
      "sources": [
        {
          "locator": "https://www.nps.gov/seki/planyourvisit/whitney.htm",
          "publisher": "National Park Service",
          "source_id": "source-nps-seki-whitney"
        }
      ]
    },
    {
      "claim": {
        "claim_id": "claim-whitney-west-approach",
        "evidence_ids": [
          "evidence-whitney-west-approach-0",
          "evidence-whitney-west-approach-1"
        ],
        "predicate": "west_side_approach_summary",
        "spatial_scope_ids": [
          "scope-peak-mount-whitney"
        ],
        "subject_id": "peak-mount-whitney",
        "temporal_scope": null,
        "value": {
          "approximate_one_way_miles": 60,
          "minimum_days_one_way": 6,
          "permit": "Sequoia and Kings Canyon wilderness permit",
          "route": "High Sierra Trail",
          "starts_at": "Crescent Meadow"
        }
      },
      "evidence": [
        {
          "claim_id": "claim-whitney-west-approach",
          "evidence_id": "evidence-whitney-west-approach-0",
          "notes": "",
          "observation_id": "observation-nps-seki-whitney-20260923",
          "stance": "supports"
        },
        {
          "claim_id": "claim-whitney-west-approach",
          "evidence_id": "evidence-whitney-west-approach-1",
          "notes": "",
          "observation_id": "observation-nps-seki-high-sierra-trail-20260923",
          "stance": "supports"
        }
      ],
      "observations": [
        {
          "artifact_refs": [],
          "content": "NPS identifies Mount Whitney as the tallest peak in the lower 48, on the Sequoia National Park–Inyo National Forest boundary. It publishes a 14,505-foot NAVD88 summit elevation, the 10.7-mile Whitney Portal approach, seasonal equipment qualification, and a roughly 60-mile west-side High Sierra Trail approach.",
          "observation_id": "observation-nps-seki-whitney-20260923",
          "observed_at": null,
          "observer": "",
          "retrieved_at": "2026-09-23T01:00:00+00:00",
          "source_id": "source-nps-seki-whitney"
        },
        {
          "artifact_refs": [],
          "content": "NPS publishes the High Sierra Trail as a west-side Mount Whitney approach: 49 miles to the JMT junction plus about 13 miles to the summit, with a High Sierra Trail wilderness permit required and a detailed sequence including Guitar Lake, the summit, Trail Camp, Outpost Camp, and Whitney Portal.",
          "observation_id": "observation-nps-seki-high-sierra-trail-20260923",
          "observed_at": null,
          "observer": "",
          "retrieved_at": "2026-09-23T01:00:00+00:00",
          "source_id": "source-nps-seki-high-sierra-trail"
        }
      ],
      "sources": [
        {
          "locator": "https://www.nps.gov/seki/planyourvisit/whitney.htm",
          "publisher": "National Park Service",
          "source_id": "source-nps-seki-whitney"
        },
        {
          "locator": "https://www.nps.gov/seki/planyourvisit/high-sierra-trail.htm",
          "publisher": "National Park Service",
          "source_id": "source-nps-seki-high-sierra-trail"
        }
      ]
    }
  ],
  "entities": [
    {
      "entity_id": "peak-mount-whitney",
      "kind": "peak",
      "name": "Mount Whitney"
    }
  ],
  "history": [
    {
      "action": "ADD",
      "change_set_id": "wp-20260923-whitney-human-planning-foundation",
      "evidence_refs": [],
      "knowledge_gap_refs": [],
      "path": "canonical/v0/observations/observation-nps-seki-whitney-20260923.json",
      "reason": "Publish a human-useful Mount Whitney identity, approach, source-conflict, and recheck foundation.",
      "record_id": "observation-nps-seki-whitney-20260923",
      "record_type": "observation",
      "summary": "Add a source-backed Mount Whitney human-planning foundation with direct peak facts, approach choices, explicit elevation conflict, and current-condition rechecks."
    }
  ],
  "navigation": {
    "next_id": "observation-nps-west-tioga-route-review-20260926",
    "position": 885,
    "previous_id": "observation-nps-seki-trail-conditions-20260923",
    "total": 1318
  },
  "observations": [
    {
      "artifact_refs": [],
      "content": "NPS identifies Mount Whitney as the tallest peak in the lower 48, on the Sequoia National Park–Inyo National Forest boundary. It publishes a 14,505-foot NAVD88 summit elevation, the 10.7-mile Whitney Portal approach, seasonal equipment qualification, and a roughly 60-mile west-side High Sierra Trail approach.",
      "observation_id": "observation-nps-seki-whitney-20260923",
      "observed_at": null,
      "observer": "",
      "retrieved_at": "2026-09-23T01:00:00+00:00",
      "source_id": "source-nps-seki-whitney"
    }
  ],
  "record": {
    "artifact_refs": [],
    "content": "NPS identifies Mount Whitney as the tallest peak in the lower 48, on the Sequoia National Park–Inyo National Forest boundary. It publishes a 14,505-foot NAVD88 summit elevation, the 10.7-mile Whitney Portal approach, seasonal equipment qualification, and a roughly 60-mile west-side High Sierra Trail approach.",
    "observation_id": "observation-nps-seki-whitney-20260923",
    "observed_at": null,
    "observer": "",
    "retrieved_at": "2026-09-23T01:00:00+00:00",
    "source_id": "source-nps-seki-whitney"
  },
  "record_type": "observation",
  "related_records": [],
  "sources": [
    {
      "locator": "https://www.nps.gov/seki/planyourvisit/whitney.htm",
      "publisher": "National Park Service",
      "source_id": "source-nps-seki-whitney"
    }
  ]
}