{
 "ocl_version": "0.1.0",
 "name": "Dugout Road",
 "slug": "dugout-road",
 "confidence": "B",
 "reported_claims": [],
 "ladder": [
  {
   "window_m": 2.0,
   "max_gradient_pct": 39.382422278107754,
   "diagnostic": true,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 649.0,
   "end_distance_m": 651.0,
   "start_elevation_m": 218.85679296425337,
   "end_elevation_m": 219.64444140981553,
   "min_gradient_pct": -6.661589936881285
  },
  {
   "window_m": 3.0,
   "max_gradient_pct": 35.968245919855235,
   "diagnostic": true,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 648.0,
   "end_distance_m": 651.0,
   "start_elevation_m": 218.56539403221987,
   "end_elevation_m": 219.64444140981553,
   "min_gradient_pct": -4.490989995407328
  },
  {
   "window_m": 5.0,
   "max_gradient_pct": 36.52283438005213,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 530.0,
   "end_distance_m": 535.0,
   "start_elevation_m": 201.2217274958941,
   "end_elevation_m": 203.0478692148967,
   "min_gradient_pct": -2.936646792085753
  },
  {
   "window_m": 10.0,
   "max_gradient_pct": 29.606321457035563,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 527.0,
   "end_distance_m": 537.0,
   "start_elevation_m": 200.61490868521258,
   "end_elevation_m": 203.57554083091614,
   "min_gradient_pct": -1.5260130419989082
  },
  {
   "window_m": 20.0,
   "max_gradient_pct": 23.034664627958676,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 518.0,
   "end_distance_m": 538.0,
   "start_elevation_m": 199.13998911279452,
   "end_elevation_m": 203.74692203838626,
   "min_gradient_pct": -1.054973119935454
  },
  {
   "window_m": 25.0,
   "max_gradient_pct": 21.620324791563007,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 528.0,
   "end_distance_m": 553.0,
   "start_elevation_m": 200.8093691684782,
   "end_elevation_m": 206.21445036636896,
   "min_gradient_pct": -0.8681408957777421
  },
  {
   "window_m": 50.0,
   "max_gradient_pct": 18.513550287269425,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 505.0,
   "end_distance_m": 555.0,
   "start_elevation_m": 197.25218369237487,
   "end_elevation_m": 206.50895883600958,
   "min_gradient_pct": 0.11998049383879561
  },
  {
   "window_m": 100.0,
   "max_gradient_pct": 16.60702572009052,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 733.0,
   "end_distance_m": 833.0,
   "start_elevation_m": 231.29711471415754,
   "end_elevation_m": 247.90414043424806,
   "min_gradient_pct": 1.1587435121227259
  }
 ],
 "shape": {
  "ascent_concentration": 0.466,
  "concentration_window_frac": 0.25,
  "longest_pitch_10pct_m": 206.0,
  "shape_class": "stepped"
 },
 "length_m": 1591.8254850313751,
 "start_elevation_m": 168.92576795662646,
 "end_elevation_m": 296.5525658653157,
 "endpoint_gain_m": 127.62679790868927,
 "overall_gradient_pct": 8.017637555675504,
 "accumulated_ascent_m": 129.09426737600327,
 "window_maxima": {
  "max_5m": {
   "gradient_pct": 36.52283438005213,
   "start_distance_m": 530.0,
   "end_distance_m": 535.0,
   "midpoint_distance_m": 532.5,
   "start_elevation_m": 201.2217274958941,
   "end_elevation_m": 203.0478692148967,
   "start_xy": [
    695959.5058500996,
    4863667.961482175
   ],
   "end_xy": [
    695963.2527929724,
    4863664.650829805
   ]
  },
  "max_10m": {
   "gradient_pct": 29.606321457035563,
   "start_distance_m": 527.0,
   "end_distance_m": 537.0,
   "midpoint_distance_m": 532.0,
   "start_elevation_m": 200.61490868521258,
   "end_elevation_m": 203.57554083091614,
   "start_xy": [
    695957.3904264563,
    4863670.085641746
   ],
   "end_xy": [
    695964.7515701215,
    4863663.326568858
   ]
  },
  "max_20m": {
   "gradient_pct": 23.034664627958676,
   "start_distance_m": 518.0,
   "end_distance_m": 538.0,
   "midpoint_distance_m": 528.0,
   "start_elevation_m": 199.13998911279452,
   "end_elevation_m": 203.74692203838626,
   "start_xy": [
    695951.1848266344,
    4863676.60411786
   ],
   "end_xy": [
    695965.5009586961,
    4863662.664438384
   ]
  },
  "max_25m": {
   "gradient_pct": 21.620324791563007,
   "start_distance_m": 528.0,
   "end_distance_m": 553.0,
   "midpoint_distance_m": 540.5,
   "start_elevation_m": 200.8093691684782,
   "end_elevation_m": 206.21445036636896,
   "start_xy": [
    695958.0799375477,
    4863669.361366622
   ],
   "end_xy": [
    695977.6795719479,
    4863653.99351949
   ]
  },
  "max_50m": {
   "gradient_pct": 18.513550287269425,
   "start_distance_m": 505.0,
   "end_distance_m": 555.0,
   "midpoint_distance_m": 530.0,
   "start_elevation_m": 197.25218369237487,
   "end_elevation_m": 206.50895883600958,
   "start_xy": [
    695942.0660715647,
    4863685.863121445
   ],
   "end_xy": [
    695979.4239234518,
    4863653.015134172
   ]
  },
  "max_100m": {
   "gradient_pct": 16.60702572009052,
   "start_distance_m": 733.0,
   "end_distance_m": 833.0,
   "midpoint_distance_m": 783.0,
   "start_elevation_m": 231.29711471415754,
   "end_elevation_m": 247.90414043424806,
   "start_xy": [
    696080.187832624,
    4863519.520761886
   ],
   "end_xy": [
    696169.3772499501,
    4863500.27922704
   ]
  }
 },
 "window_minima": {
  "min_5m": {
   "gradient_pct": -2.936646792085753,
   "start_distance_m": 3.0,
   "end_distance_m": 8.0,
   "midpoint_distance_m": 5.5,
   "start_elevation_m": 169.1083745509082,
   "end_elevation_m": 168.9615422113039,
   "start_xy": [
    695506.6715457481,
    4863875.887923384
   ],
   "end_xy": [
    695510.2174553283,
    4863872.362795692
   ]
  },
  "min_10m": {
   "gradient_pct": -1.5260130419989082,
   "start_distance_m": 3.0,
   "end_distance_m": 13.0,
   "midpoint_distance_m": 8.0,
   "start_elevation_m": 169.1083745509082,
   "end_elevation_m": 168.9557732467083,
   "start_xy": [
    695506.6715457481,
    4863875.887923384
   ],
   "end_xy": [
    695513.7633649086,
    4863868.837667999
   ]
  },
  "min_20m": {
   "gradient_pct": -1.054973119935454,
   "start_distance_m": 3.0,
   "end_distance_m": 23.0,
   "midpoint_distance_m": 13.0,
   "start_elevation_m": 169.1083745509082,
   "end_elevation_m": 168.8973799269211,
   "start_xy": [
    695506.6715457481,
    4863875.887923384
   ],
   "end_xy": [
    695520.855184069,
    4863861.787412614
   ]
  },
  "min_25m": {
   "gradient_pct": -0.8681408957777421,
   "start_distance_m": 3.0,
   "end_distance_m": 28.0,
   "midpoint_distance_m": 15.5,
   "start_elevation_m": 169.1083745509082,
   "end_elevation_m": 168.89133932696376,
   "start_xy": [
    695506.6715457481,
    4863875.887923384
   ],
   "end_xy": [
    695524.5247997346,
    4863858.394528897
   ]
  },
  "min_50m": {
   "gradient_pct": 0.11998049383879561,
   "start_distance_m": 3.0,
   "end_distance_m": 53.0,
   "midpoint_distance_m": 28.0,
   "start_elevation_m": 169.1083745509082,
   "end_elevation_m": 169.1683647978276,
   "start_xy": [
    695506.6715457481,
    4863875.887923384
   ],
   "end_xy": [
    695544.1932417935,
    4863843.076699496
   ]
  },
  "min_100m": {
   "gradient_pct": 1.1587435121227259,
   "start_distance_m": 3.0,
   "end_distance_m": 103.0,
   "midpoint_distance_m": 53.0,
   "start_elevation_m": 169.1083745509082,
   "end_elevation_m": 170.26711806303092,
   "start_xy": [
    695506.6715457481,
    4863875.887923384
   ],
   "end_xy": [
    695592.5961964388,
    4863835.067352067
   ]
  }
 },
 "diagnostic_window_maxima": {
  "max_2m": {
   "gradient_pct": 39.382422278107754,
   "start_distance_m": 649.0,
   "end_distance_m": 651.0,
   "midpoint_distance_m": 650.0,
   "start_elevation_m": 218.85679296425337,
   "end_elevation_m": 219.64444140981553,
   "start_xy": [
    696051.2434410304,
    4863598.1117192935
   ],
   "end_xy": [
    696051.7919053482,
    4863596.188392256
   ]
  },
  "max_3m": {
   "gradient_pct": 35.968245919855235,
   "start_distance_m": 648.0,
   "end_distance_m": 651.0,
   "midpoint_distance_m": 649.5,
   "start_elevation_m": 218.56539403221987,
   "end_elevation_m": 219.64444140981553,
   "start_xy": [
    696050.9692088715,
    4863599.073382812
   ],
   "end_xy": [
    696051.7919053482,
    4863596.188392256
   ]
  }
 },
 "diagnostic_note": "Windows <=3 m are at raster-noise scale (1-sigma raster noise alone is roughly +/-7 pp at 2 m and +/-5 pp at 3 m on a 1 m DTM). Diagnostic use only: never a headline or ranking value.",
 "quality_summary": {
  "overhead_obstruction": {
   "obstruction_threshold_m": 2.0,
   "obstructed_fraction": 0.53,
   "obstruction_max_height_m": 28.4,
   "flagged_windows_m": [
    2,
    3,
    5,
    10,
    20,
    25,
    50,
    100
   ]
  },
  "review": [],
  "extent": [
   "may_continue_beyond_end"
  ]
 },
 "provenance": {
  "analysis_version": "0.1.0",
  "sample_interval_m": 1.0,
  "interpolation": "bilinear",
  "smoothing": "none",
  "gradient_windows_m": [
   5.0,
   10.0,
   20.0,
   25.0,
   50.0,
   100.0
  ],
  "diagnostic_windows_m": [
   2.0,
   3.0
  ],
  "elevation_crs": "EPSG:26918",
  "elevation_resolution_m": 1.0,
  "elevation_tiles": [
   "data/cache/usa/vt/USGS_1M_18_x69y487_VT_Statewide_A23.tif"
  ],
  "calculated_at": "2026-09-04T21:27:48+00:00",
  "road_source": "OpenStreetMap (local PBF extract)",
  "road_attribution": "\u00a9 OpenStreetMap contributors, ODbL",
  "osm_pbf_path": "data/cache/pbf/vermont-260821.osm.pbf",
  "osm_snapshot": "2026-08-21T20:21:11Z",
  "run_id": "hunt-wave1-260905",
  "elevation_provider": "USGS 3DEP (The National Map)",
  "elevation_licence": "Public domain \u2014 USGS 3DEP 1 m DEM, courtesy of the U.S. Geological Survey",
  "elevation_dataset": "USGS 3DEP 1 m DEM, VT_Statewide_A23 (collected 2023)",
  "elevation_tile_ids": [
   "x69y487"
  ],
  "climb_origin": "discovered",
  "canopy_source": {
   "kind": "ept_corridor_max_return",
   "ept_source": "https://s3-us-west-2.amazonaws.com/usgs-lidar-public/VT_Statewide_2_A23",
   "ept_crs": "EPSG:3857",
   "station_coverage": 0.999,
   "cell_ground_m": 1.0,
   "nodes_failed": 0
  },
  "license": "ODbL-1.0",
  "license_url": "https://howsteep.org/licensing"
 },
 "area": {
  "place": "Randolph",
  "county": "Vermont"
 }
}