{
 "ocl_version": "0.1.0",
 "name": "Millook Mouth to Raven's Beak",
 "slug": "discovered-lane-50-7698-4-5799",
 "confidence": "B",
 "reported_claims": [],
 "ladder": [
  {
   "window_m": 2.0,
   "max_gradient_pct": 38.43554605971882,
   "diagnostic": true,
   "flags": [
    "structure_excluded"
   ],
   "start_distance_m": 355.0,
   "end_distance_m": 357.0,
   "start_elevation_m": 53.97499821058165,
   "end_elevation_m": 54.74370913177603,
   "min_gradient_pct": -32.36733753685384,
   "suppressed_max_gradient_pct": 61.224952534803556,
   "suppressed_location_m": [
    35.0,
    37.0
   ]
  },
  {
   "window_m": 3.0,
   "max_gradient_pct": 32.54768060398755,
   "diagnostic": true,
   "flags": [
    "structure_excluded"
   ],
   "start_distance_m": 355.0,
   "end_distance_m": 358.0,
   "start_elevation_m": 53.97499821058165,
   "end_elevation_m": 54.95142862870128,
   "min_gradient_pct": -32.21314611453631,
   "suppressed_max_gradient_pct": 42.00868166647661,
   "suppressed_location_m": [
    112.0,
    115.0
   ]
  },
  {
   "window_m": 5.0,
   "max_gradient_pct": 28.075562905271738,
   "diagnostic": false,
   "flags": [
    "structure_excluded"
   ],
   "start_distance_m": 149.0,
   "end_distance_m": 154.0,
   "start_elevation_m": 29.08193709442825,
   "end_elevation_m": 30.485715239691835,
   "min_gradient_pct": -16.93556519567153,
   "suppressed_max_gradient_pct": 43.80020815384082,
   "suppressed_location_m": [
    32.0,
    37.0
   ]
  },
  {
   "window_m": 10.0,
   "max_gradient_pct": 26.644511834111597,
   "diagnostic": false,
   "flags": [
    "structure_excluded"
   ],
   "start_distance_m": 144.0,
   "end_distance_m": 154.0,
   "start_elevation_m": 27.821264056280675,
   "end_elevation_m": 30.485715239691835,
   "min_gradient_pct": -7.799720500468297,
   "suppressed_max_gradient_pct": 28.981777403382836,
   "suppressed_location_m": [
    27.0,
    37.0
   ]
  },
  {
   "window_m": 20.0,
   "max_gradient_pct": 23.8906467880107,
   "diagnostic": false,
   "flags": [
    "structure_excluded"
   ],
   "start_distance_m": 144.0,
   "end_distance_m": 164.0,
   "start_elevation_m": 27.821264056280675,
   "end_elevation_m": 32.599393413882815,
   "min_gradient_pct": -0.34574350979464263,
   "suppressed_max_gradient_pct": 24.669005820750947,
   "suppressed_location_m": [
    95.0,
    115.0
   ]
  },
  {
   "window_m": 25.0,
   "max_gradient_pct": 23.227238990125723,
   "diagnostic": false,
   "flags": [
    "structure_excluded"
   ],
   "start_distance_m": 140.0,
   "end_distance_m": 165.0,
   "start_elevation_m": 27.073351916767976,
   "end_elevation_m": 32.88016166429941,
   "min_gradient_pct": 0.2631165380833451,
   "suppressed_max_gradient_pct": 23.44943596754601,
   "suppressed_location_m": [
    95.0,
    120.0
   ]
  },
  {
   "window_m": 50.0,
   "max_gradient_pct": 20.158894811586364,
   "diagnostic": false,
   "flags": [
    "structure_excluded"
   ],
   "start_distance_m": 118.0,
   "end_distance_m": 168.0,
   "start_elevation_m": 23.071384623927244,
   "end_elevation_m": 33.150832029720426,
   "min_gradient_pct": 4.232930272111503,
   "suppressed_max_gradient_pct": 21.353387588903125,
   "suppressed_location_m": [
    104.0,
    154.0
   ]
  },
  {
   "window_m": 100.0,
   "max_gradient_pct": 18.09514270723259,
   "diagnostic": false,
   "flags": [
    "structure_excluded"
   ],
   "start_distance_m": 289.0,
   "end_distance_m": 389.0,
   "start_elevation_m": 42.280195103786546,
   "end_elevation_m": 60.375337811019136,
   "min_gradient_pct": 6.031431288726672,
   "suppressed_max_gradient_pct": 18.598888385300498,
   "suppressed_location_m": [
    73.0,
    173.0
   ]
  }
 ],
 "shape": {
  "ascent_concentration": 0.295,
  "concentration_window_frac": 0.25,
  "longest_pitch_10pct_m": 303.0,
  "shape_class": "sustained"
 },
 "length_m": 767.3907099884174,
 "start_elevation_m": 8.048008839221975,
 "end_elevation_m": 111.05517665045168,
 "endpoint_gain_m": 103.0071678112297,
 "overall_gradient_pct": 13.423040762740591,
 "accumulated_ascent_m": 105.38226160991064,
 "window_maxima": {
  "max_5m": {
   "gradient_pct": 28.075562905271738,
   "start_distance_m": 149.0,
   "end_distance_m": 154.0,
   "midpoint_distance_m": 151.5,
   "start_elevation_m": 29.08193709442825,
   "end_elevation_m": 30.485715239691835,
   "start_xy": [
    218415.37926702123,
    99962.3006569758
   ],
   "end_xy": [
    218411.96309281577,
    99965.95165051156
   ]
  },
  "max_10m": {
   "gradient_pct": 26.644511834111597,
   "start_distance_m": 144.0,
   "end_distance_m": 154.0,
   "midpoint_distance_m": 149.0,
   "start_elevation_m": 27.821264056280675,
   "end_elevation_m": 30.485715239691835,
   "start_xy": [
    218418.95519008013,
    99958.81265743342
   ],
   "end_xy": [
    218411.96309281577,
    99965.95165051156
   ]
  },
  "max_20m": {
   "gradient_pct": 23.8906467880107,
   "start_distance_m": 144.0,
   "end_distance_m": 164.0,
   "midpoint_distance_m": 154.0,
   "start_elevation_m": 27.821264056280675,
   "end_elevation_m": 32.599393413882815,
   "start_xy": [
    218418.95519008013,
    99958.81265743342
   ],
   "end_xy": [
    218405.13074440492,
    99973.25363758307
   ]
  },
  "max_25m": {
   "gradient_pct": 23.227238990125723,
   "start_distance_m": 140.0,
   "end_distance_m": 165.0,
   "midpoint_distance_m": 152.5,
   "start_elevation_m": 27.073351916767976,
   "end_elevation_m": 32.88016166429941,
   "start_xy": [
    218421.93034756716,
    99956.13900114894
   ],
   "end_xy": [
    218404.44750956385,
    99973.98383629022
   ]
  },
  "max_50m": {
   "gradient_pct": 20.158894811586364,
   "start_distance_m": 118.0,
   "end_distance_m": 168.0,
   "midpoint_distance_m": 143.0,
   "start_elevation_m": 23.071384623927244,
   "end_elevation_m": 33.150832029720426,
   "start_xy": [
    218438.2729163592,
    99941.41093075971
   ],
   "end_xy": [
    218402.3978050406,
    99976.17443241167
   ]
  },
  "max_100m": {
   "gradient_pct": 18.09514270723259,
   "start_distance_m": 289.0,
   "end_distance_m": 389.0,
   "midpoint_distance_m": 339.0,
   "start_elevation_m": 42.280195103786546,
   "end_elevation_m": 60.375337811019136,
   "start_xy": [
    218307.34290196592,
    99950.16016816859
   ],
   "end_xy": [
    218229.66397080736,
    99983.26289537683
   ]
  }
 },
 "window_minima": {
  "min_5m": {
   "gradient_pct": -16.93556519567153,
   "start_distance_m": 37.0,
   "end_distance_m": 42.0,
   "midpoint_distance_m": 39.5,
   "start_elevation_m": 14.712438298798507,
   "end_elevation_m": 13.86566003901493,
   "start_xy": [
    218447.88767003035,
    100009.64933595111
   ],
   "end_xy": [
    218448.1498974694,
    100004.65621700899
   ]
  },
  "min_10m": {
   "gradient_pct": -7.799720500468297,
   "start_distance_m": 37.0,
   "end_distance_m": 47.0,
   "midpoint_distance_m": 42.0,
   "start_elevation_m": 14.712438298798507,
   "end_elevation_m": 13.932466248751677,
   "start_xy": [
    218447.88767003035,
    100009.64933595111
   ],
   "end_xy": [
    218448.41212490844,
    99999.66309806686
   ]
  },
  "min_20m": {
   "gradient_pct": -0.34574350979464263,
   "start_distance_m": 37.0,
   "end_distance_m": 57.0,
   "midpoint_distance_m": 47.0,
   "start_elevation_m": 14.712438298798507,
   "end_elevation_m": 14.643289596839578,
   "start_xy": [
    218447.88767003035,
    100009.64933595111
   ],
   "end_xy": [
    218448.9365797865,
    99989.6768601826
   ]
  },
  "min_25m": {
   "gradient_pct": 0.2631165380833451,
   "start_distance_m": 37.0,
   "end_distance_m": 62.0,
   "midpoint_distance_m": 49.5,
   "start_elevation_m": 14.712438298798507,
   "end_elevation_m": 14.778217433319343,
   "start_xy": [
    218447.88767003035,
    100009.64933595111
   ],
   "end_xy": [
    218449.19880722556,
    99984.68374124049
   ]
  },
  "min_50m": {
   "gradient_pct": 4.232930272111503,
   "start_distance_m": 37.0,
   "end_distance_m": 87.0,
   "midpoint_distance_m": 62.0,
   "start_elevation_m": 14.712438298798507,
   "end_elevation_m": 16.828903434854258,
   "start_xy": [
    218447.88767003035,
    100009.64933595111
   ],
   "end_xy": [
    218450.3148830099,
    99959.71842560296
   ]
  },
  "min_100m": {
   "gradient_pct": 6.031431288726672,
   "start_distance_m": 173.0,
   "end_distance_m": 273.0,
   "midpoint_distance_m": 223.0,
   "start_elevation_m": 34.075116847896844,
   "end_elevation_m": 40.106548136623516,
   "start_xy": [
    218398.98163083516,
    99979.82542594743
   ],
   "end_xy": [
    218320.63815256514,
    99958.84100378609
   ]
  }
 },
 "diagnostic_window_maxima": {
  "max_2m": {
   "gradient_pct": 38.43554605971882,
   "start_distance_m": 355.0,
   "end_distance_m": 357.0,
   "midpoint_distance_m": 356.0,
   "start_elevation_m": 53.97499821058165,
   "end_elevation_m": 54.74370913177603,
   "start_xy": [
    218247.5228764162,
    99960.71347324527
   ],
   "end_xy": [
    218246.8963278731,
    99962.6127986316
   ]
  },
  "max_3m": {
   "gradient_pct": 32.54768060398755,
   "start_distance_m": 355.0,
   "end_distance_m": 358.0,
   "midpoint_distance_m": 356.5,
   "start_elevation_m": 53.97499821058165,
   "end_elevation_m": 54.95142862870128,
   "start_xy": [
    218247.5228764162,
    99960.71347324527
   ],
   "end_xy": [
    218246.58305360156,
    99963.56246132476
   ]
  }
 },
 "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": 0.009,
   "obstruction_max_height_m": 4.33,
   "flagged_windows_m": []
  },
  "structure_suppression": {
   "masked_fraction": 0.017,
   "windows_resited": [
    2.0,
    3.0,
    5.0,
    10.0,
    20.0,
    25.0,
    50.0,
    100.0
   ],
   "windows_unresolved": []
  },
  "excluded_ranges_m": [
   [
    34.0,
    40.0
   ],
   [
    112.0,
    117.0
   ]
  ],
  "review": [],
  "extent": [
   "may_start_earlier"
  ]
 },
 "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:27700",
  "elevation_resolution_m": 1.0,
  "elevation_tiles": [
   "data/cache/england/bulk_dtm_1m/SX1595.tif",
   "data/cache/england/bulk_dtm_1m/SS1500.tif"
  ],
  "calculated_at": "2026-08-15T03:14:11+00:00",
  "road_source": "OpenStreetMap (local PBF extract)",
  "road_attribution": "\u00a9 OpenStreetMap contributors, ODbL",
  "osm_pbf_path": "data/cache/pbf/england-2026-08-12-roads.osm.pbf",
  "osm_snapshot": "2026-08-12T20:21:46Z",
  "elevation_provider": "Environment Agency",
  "elevation_dataset": "EA LIDAR Composite DTM 1m (2022)",
  "elevation_licence": "Open Government Licence v3 \u2014 \u00a9 Environment Agency",
  "elevation_coverage_id": "13787b9a-26a4-4775-8523-806d13af58fc__Lidar_Composite_Elevation_DTM_1m",
  "elevation_tile_ids": [
   "SX1595.tif",
   "SS1500.tif"
  ],
  "climb_origin": "discovered",
  "notes": "Coarse pass: max 14.8% over 200 m (Terrain 50), gain 47.8 m over 352 m way. EXTENDED by graph walk: +2 segment(s) at base, +0 at top (stop: base=no_descending_continuation, top=no_ascending_continuation; min_avg=2.0%). Review before adopting. DEDUPE: absorbed 1 overlapping proposal(s): discovered-lane-50-7710-4-5774",
  "naming_note": "auto-named from gazetteer (hypothesis, unreviewed); discovered as 'Discovered lane (50.7698, -4.5799)'"
 },
 "area": {
  "place": "Raven's Beak",
  "county": "Cornwall"
 }
}