{
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        ],
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          "managing_unit": "agency-inyo-national-forest",
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        }
      ],
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        {
          "artifact_refs": [],
          "content": "The Mono Basin day-hike guide maps Parker Lake, Yost and Fern Lakes, and Lundy Canyon. Parker Lake is 1.8 miles one way. The Yost/Fern route splits 1.5 miles from its trailhead; Fern Lake is another 0.7 mile and Yost Lake another 2.3 miles. Lundy Canyon reaches 20 Lakes Basin in 5.4 miles one way; its bottom two-thirds are easier and its upper third climbs steep switchbacks. The guide publishes road and parking directions for each trailhead.",
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        {
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      ],
      "observations": [
        {
          "artifact_refs": [],
          "content": "The Mono Basin day-hike guide maps Parker Lake, Yost and Fern Lakes, and Lundy Canyon. Parker Lake is 1.8 miles one way. The Yost/Fern route splits 1.5 miles from its trailhead; Fern Lake is another 0.7 mile and Yost Lake another 2.3 miles. Lundy Canyon reaches 20 Lakes Basin in 5.4 miles one way; its bottom two-thirds are easier and its upper third climbs steep switchbacks. The guide publishes road and parking directions for each trailhead.",
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        "claim_id": "claim-parker-lake-route-profile",
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        {
          "claim_id": "claim-parker-lake-route-profile",
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        }
      ],
      "observations": [
        {
          "artifact_refs": [],
          "content": "The Mono Basin day-hike guide maps Parker Lake, Yost and Fern Lakes, and Lundy Canyon. Parker Lake is 1.8 miles one way. The Yost/Fern route splits 1.5 miles from its trailhead; Fern Lake is another 0.7 mile and Yost Lake another 2.3 miles. Lundy Canyon reaches 20 Lakes Basin in 5.4 miles one way; its bottom two-thirds are easier and its upper third climbs steep switchbacks. The guide publishes road and parking directions for each trailhead.",
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      "claim": {
        "claim_id": "claim-route-fern-lake-june-published-profile",
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      ],
      "observations": [
        {
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          "content": "The Mono Basin day-hike guide maps Parker Lake, Yost and Fern Lakes, and Lundy Canyon. Parker Lake is 1.8 miles one way. The Yost/Fern route splits 1.5 miles from its trailhead; Fern Lake is another 0.7 mile and Yost Lake another 2.3 miles. Lundy Canyon reaches 20 Lakes Basin in 5.4 miles one way; its bottom two-thirds are easier and its upper third climbs steep switchbacks. The guide publishes road and parking directions for each trailhead.",
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    },
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        }
      ],
      "observations": [
        {
          "artifact_refs": [],
          "content": "The Mono Basin day-hike guide maps Parker Lake, Yost and Fern Lakes, and Lundy Canyon. Parker Lake is 1.8 miles one way. The Yost/Fern route splits 1.5 miles from its trailhead; Fern Lake is another 0.7 mile and Yost Lake another 2.3 miles. Lundy Canyon reaches 20 Lakes Basin in 5.4 miles one way; its bottom two-thirds are easier and its upper third climbs steep switchbacks. The guide publishes road and parking directions for each trailhead.",
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    },
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        "claim_id": "claim-trailhead-lundy-canyon-operational-profile",
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        ],
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            "overflow": "extra parking approximately one mile down-canyon",
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          },
          "potable_water": {
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          "road_access": {
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            "surface": "dirt on final approach beyond Lundy Lake"
          },
          "route_connector": {
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        }
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        {
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          ],
          "content": "The guide places Lundy Canyon trail access on Lundy Lake Road seven miles north of Lee Vining and the trailhead parking two miles west of Lundy Lake. It identifies extra parking about one mile down-canyon and depicts the final approach beyond Lundy Lake as dirt road. It places the Yost/Fern trailhead about one mile south of Silver Lake on paved Highway 158 and depicts both routes beginning at that trailhead. It does not publish stall counts, toilets, potable water, or Yost/Fern overflow parking.",
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    },
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          },
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      ],
      "observations": [
        {
          "artifact_refs": [
            "Mono Basin Day Hikes, pages 1-2"
          ],
          "content": "The guide places Lundy Canyon trail access on Lundy Lake Road seven miles north of Lee Vining and the trailhead parking two miles west of Lundy Lake. It identifies extra parking about one mile down-canyon and depicts the final approach beyond Lundy Lake as dirt road. It places the Yost/Fern trailhead about one mile south of Silver Lake on paved Highway 158 and depicts both routes beginning at that trailhead. It does not publish stall counts, toilets, potable water, or Yost/Fern overflow parking.",
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    },
    {
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        "claim_id": "claim-yost-fern-route-profile",
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          "evidence-yost-fern-route-profile"
        ],
        "predicate": "route_profile",
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        ],
        "subject_id": "trailhead-yost-fern",
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        "value": {
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          "fern_total_one_way_miles": 2.2,
          "shared_distance_to_fork_miles": 1.5,
          "yost_beyond_fork_miles": 2.3,
          "yost_total_one_way_miles": 3.8
        }
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        }
      ],
      "observations": [
        {
          "artifact_refs": [],
          "content": "The Mono Basin day-hike guide maps Parker Lake, Yost and Fern Lakes, and Lundy Canyon. Parker Lake is 1.8 miles one way. The Yost/Fern route splits 1.5 miles from its trailhead; Fern Lake is another 0.7 mile and Yost Lake another 2.3 miles. Lundy Canyon reaches 20 Lakes Basin in 5.4 miles one way; its bottom two-thirds are easier and its upper third climbs steep switchbacks. The guide publishes road and parking directions for each trailhead.",
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  ],
  "entities": [
    {
      "entity_id": "place-lundy-canyon",
      "kind": "place",
      "name": "Lundy Canyon"
    },
    {
      "entity_id": "route-fern-lake-june",
      "kind": "route",
      "name": "Fern Lake Trail"
    },
    {
      "entity_id": "route-lundy-canyon",
      "kind": "route",
      "name": "Lundy Canyon Trail"
    },
    {
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    },
    {
      "entity_id": "route-yost-lake",
      "kind": "route",
      "name": "Yost Lake Trail"
    },
    {
      "entity_id": "trailhead-lundy-canyon",
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      "name": "Lundy Canyon Trailhead"
    },
    {
      "entity_id": "trailhead-yost-fern",
      "kind": "trailhead",
      "name": "Yost and Fern Lakes Trailhead"
    }
  ],
  "history": [
    {
      "action": "ADD",
      "change_set_id": "wp-20260923-eastern-sierra-foliage-hikes",
      "evidence_refs": [],
      "knowledge_gap_refs": [],
      "path": "canonical/v0/sources/source-usfs-mono-basin-day-hikes.json",
      "reason": "Publish a source-backed access and route foundation for Eastern Sierra fall-foliage day-hike alternatives near East Fork Campground.",
      "record_id": "source-usfs-mono-basin-day-hikes",
      "record_type": "source",
      "summary": "Add source-backed Eastern Sierra foliage-hike trailheads, managing areas, route associations, published distances and hazards, plus explicit research and pre-trip gaps."
    }
  ],
  "navigation": {
    "next_id": "source-usfs-mosquito-flat-backpacker-campground",
    "position": 561,
    "previous_id": "source-usfs-mcgee-wildflower-hot-spots",
    "total": 587
  },
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    {
      "artifact_refs": [
        "Mono Basin Day Hikes, pages 1-2"
      ],
      "content": "The guide places Lundy Canyon trail access on Lundy Lake Road seven miles north of Lee Vining and the trailhead parking two miles west of Lundy Lake. It identifies extra parking about one mile down-canyon and depicts the final approach beyond Lundy Lake as dirt road. It places the Yost/Fern trailhead about one mile south of Silver Lake on paved Highway 158 and depicts both routes beginning at that trailhead. It does not publish stall counts, toilets, potable water, or Yost/Fern overflow parking.",
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      "source_id": "source-usfs-mono-basin-day-hikes"
    },
    {
      "artifact_refs": [],
      "content": "The Mono Basin day-hike guide maps Parker Lake, Yost and Fern Lakes, and Lundy Canyon. Parker Lake is 1.8 miles one way. The Yost/Fern route splits 1.5 miles from its trailhead; Fern Lake is another 0.7 mile and Yost Lake another 2.3 miles. Lundy Canyon reaches 20 Lakes Basin in 5.4 miles one way; its bottom two-thirds are easier and its upper third climbs steep switchbacks. The guide publishes road and parking directions for each trailhead.",
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  ],
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    "publisher": "USDA Forest Service",
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    {
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      "publisher": "USDA Forest Service",
      "source_id": "source-usfs-mono-basin-day-hikes"
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}