{
  "id": "farview-piracy",
  "name": "Farview & Piracy",
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  "surface_method": "classified-ground",
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    "nps-pois",
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  "place_ids": [
    "farview-point",
    "piracy-point"
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  "theme": "On a drainage divide",
  "question": "What can a local ridge tell us about a larger watershed?",
  "interaction": "section",
  "view_yaw": 1.0,
  "view_pitch": 1.12,
  "schema": 1,
  "kind": "landscape-study",
  "checked_at": "2026-10-02",
  "geometry_status": "Derived from source-classified ground returns; terrain study, not a closed rock scan",
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    "ept_horizontal": "WGS84 Pseudo-Mercator (EPSG:3857)",
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    "vertical": "NAVD88, Geoid12B; source heights retained",
    "units": "metres",
    "axes": "x east, y up from base_m, z south",
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    "transform_note": "EPT projection transformed with pyproj; no claim of survey-grade datum alignment. Centimetre export quantization is not source accuracy."
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    "density_returns_per_m2": 36.099,
    "ground_returns": 4887764,
    "retained_returns": 4887764,
    "vegetation_candidate_returns": 9660093,
    "excluded_noise_or_other": 7619,
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    "cliff_or_small_patch_omission_fraction": 0.015959326516421006,
    "maximum_3x3_relief_m": 12.0,
    "minimum_connected_patch_m2": 100.0,
    "maximum_nearest_fill_m": 3.0,
    "cell_m": 1.5,
    "distance_reference": "Distance between grid-node centers, not exact source-point XY.",
    "maximum_grid_bin_offset_m": 1.0606601717798212,
    "maximum_source_xy_distance_bound_m": 4.060660171779821,
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    "surface_heights_m": [
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    "intensity_display_percentiles": [
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    "vertical_surfaces": "Abrupt interpolated cliff nodes are omitted; directly sampled bins are retained. Connecting top-surface samples still does not measure a wall, undercut, window or unseen interior.",
    "surface_method": "classified-ground"
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    "count": 120000,
    "sampling": "fixed seed 20261002, uniform without replacement from valid crop returns"
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  "profiles": "profiles.json.gz",
  "coverage": {
    "image": "coverage.webp",
    "data": "coverage.json.gz",
    "nodes": 513,
    "orientation": "north up; west left"
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  "camera": {
    "yaw": 1.0,
    "pitch": 1.12,
    "distance_m": 1536.0,
    "target": [
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    "limits": {
      "minimum_distance_widths": 1.35,
      "maximum_distance_widths": 4,
      "minimum_pitch_radians": 1.0,
      "maximum_pitch_radians": 1.55
    },
    "scope": "Above-terrain observation only; no ground-level camera or visitor-viewpoint equivalence."
  },
  "bounds_local": [
    [
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      -384.0
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    [
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  "source_dataset": {
    "id": "USGS_LPC_UT_Southern_QL1_2018_LAS_2019",
    "acquired": "2018-04-27 / 2018-07-29 project interval",
    "published": "2019-06-03",
    "url": "https://registry.opendata.aws/usgs-lidar/",
    "license": "US Government Public Domain",
    "credit": "Map services and data available from U.S. Geological Survey, National Geospatial Program."
  },
  "processing": {
    "mesh": "Source class 2 ground only. Highest retained return per nearest grid node; nearest interpolation up to 3 m; isolated spikes exceeding all 8 neighbors by 6 m lowered to neighbor maximum. Interpolated nodes with more than 12 m relief across a 3x3 neighborhood and connected patches smaller than 100 m² are omitted. Directly sampled ground bins otherwise remain, including steep rims. Original returns are unchanged. No morphological closing.",
    "vegetation": "Source classes 3/4/5 plus low-intensity multiple echoes and low-intensity raised returns over nearby gentle classified ground are excluded. This is an imperfect heuristic, not a species/rock classifier.",
    "lighting": "Normals and static 12-direction terrain occlusion are derived; material color, studio lighting and display category colors are illustrative.",
    "detail": "Three nested node grids; no-data cells omitted at every LOD; low LOD can omit extra edge triangles to preserve holes."
  },
  "limitations": [
    "Hidden rock surfaces, undercuts and windows are not reconstructed.",
    "Abrupt interpolated cliff nodes are omitted; connections between directly sampled bins are derived facets, not measured wall surfaces.",
    "Ground classification can omit standing rock or retain classification errors; inspect the return view.",
    "NAIP is overhead imagery from a different year; it cannot supply photographic detail on vertical faces.",
    "The cut boundary is an editorial crop; there is no modeled geology beneath it.",
    "No route, current condition, erosion rate or collapse forecast is inferred."
  ],
  "posters": {
    "large": "poster.webp",
    "small": "poster-small.webp",
    "material": "aerial",
    "geometry_year": 2018,
    "imagery_year": 2024,
    "kind": "actual model render, not a ground photograph"
  },
  "quality_status": "qualified-ground-terrain-with-visible-omissions",
  "editorial": {
    "lede": "Two overlooks share a ridge. Their views open toward different parts of the plateau edge.",
    "body": "Farview and Piracy belong in one study: NPS links them by a short path, with Piracy to the north. This local footprint contains both mapped overlooks. Compare the two oblique views, then turn north-up to see the ridge and the beginnings of its adjoining slopes.",
    "lesson": "NPS uses Piracy Point to explain competition between neighboring drainages. The section lets you inspect local relief; the full Sheep Creek and Willis Creek watersheds extend beyond this crop. No drainage capture date is calculated.",
    "limit": "One footprint and one exhibit, with two mapped viewpoints. The long-distance Grand Staircase panorama and the full watershed divide are not reconstructed. Camera presets are aerial study views, not photographs from the overlooks.",
    "caption": "A single terrain footprint around Farview and Piracy Points, showing the shared ridge and nearby slopes.",
    "comparison": "The published NPS locators are about 273 m apart. They are retained as overlook positions, independently of the editorial mesh center."
  },
  "sources": [
    {
      "id": "nps-farview",
      "title": "Farview Point",
      "url": "https://www.nps.gov/places/000/farview-point.htm",
      "publisher": "National Park Service",
      "date": "2021-02-01",
      "retrieved_at": "2026-10-02",
      "license": "Facts paraphrased and linked. Photograph rights recorded separately per image.",
      "supports": "Piracy north of Farview and local plateau context; distant panorama is outside the crop."
    },
    {
      "id": "nps-piracy",
      "title": "Piracy Point",
      "url": "https://www.nps.gov/places/000/piracy-point.htm",
      "publisher": "National Park Service",
      "date": "2021-01-28",
      "retrieved_at": "2026-10-02",
      "license": "Facts paraphrased and linked. Photograph rights recorded separately per image.",
      "supports": "Sheep Creek and Willis Creek drainage interpretation; no capture date or calibrated watershed simulation."
    },
    {
      "id": "nps-pois",
      "title": "NPS Public Points of Interest",
      "url": "https://mapservices.nps.gov/arcgis/rest/services/NationalDatasets/NPS_Public_POIs/FeatureServer/0",
      "publisher": "National Park Service",
      "date": "dataset records have individual dates",
      "retrieved_at": "2026-10-02",
      "license": "NPS public geospatial data; no endorsement; agency source and accuracy fields preserved",
      "supports": "Mapped overlook positions; Hat Shop Hoodoos Viewpoint 9513. Accuracy is unknown, scaled or >=14 m for used records. Existing travel coordinates remain unchanged; similar names with different roles are not substituted."
    },
    {
      "id": "gnis",
      "title": "Geographic Names — Landforms",
      "url": "https://carto.nationalmap.gov/arcgis/rest/services/geonames/MapServer/5",
      "publisher": "US Geological Survey",
      "date": null,
      "retrieved_at": "2026-10-02",
      "license": "US Government Public Domain; USGS National Map terms",
      "supports": "Independent named-feature locators, including Hat Shop 1441625, Farview 1441016, Piracy 1444459 and Corral Hollow 1439972. Points do not define a feature boundary. Valley records include multiple positions, not a trail polyline."
    }
  ],
  "imagery": {
    "publisher": "USDA Farm Service Agency / FPAC",
    "dataset": "National Agriculture Imagery Program (NAIP), Utah 2024",
    "retrieved_at": "2026-10-02T09:10:34.324892+00:00",
    "source_pixels_m": 0.6,
    "export_pixels": 1280,
    "export_pixel_m": 0.6,
    "crs": "EPSG:32612",
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      "spatialReference": {
        "wkid": 32612,
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    "flight_dates": [
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    "images": [
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    "catalog_url": "https://apps.geo.fpac.usda.gov/geo-imagery/rest/services/naip/conus_naip/ImageServer/query?f=json&geometry=%7B%22xmin%22%3A389652.29135501746%2C%22ymin%22%3A4155711.059565128%2C%22xmax%22%3A390420.29135501746%2C%22ymax%22%3A4156479.059565128%2C%22spatialReference%22%3A%7B%22wkid%22%3A32612%7D%7D&geometryType=esriGeometryEnvelope&inSR=32612&spatialRel=esriSpatialRelIntersects&outFields=%2A&returnGeometry=false&where=Category%3D1+AND+year_ts%3D2024",
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    "original_sha256": "faec425fa2c159f8c96f3ec87e3ab84656c077c43fb731dcaa0068c2f0c5775b",
    "license": "US Government Public Domain",
    "license_url": "https://catalog.data.gov/dataset/national-agriculture-imagery-program-naip-imagery",
    "processing": "Locked 2024 primary rasters, RGB bands 0/1/2, orthographic drape; bilinear export, WebP encoding. No invented detail.",
    "limitations": "Leaf-on aerial imagery draped on 2018 filtered topography; acquisition shadows, tree crowns, temporal differences and metre-scale registration error remain. Cliff faces stretch a top-down pixel; hidden walls are not photographed."
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  "visual_review": {
    "checked_at": "2026-10-02",
    "views": [
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    "scope": "Above-terrain ground study only. Visible gaps remain; neither closed cliffs nor cap/neck fidelity is accepted.",
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}