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  "road_source": "wales-discovered-adopted-routes/discovered-lane-52-1258-3-3733.geojson",
  "elevation_provider": "Welsh Government",
  "elevation_dataset": "Welsh Government LiDAR 1m DTM (2020-2023)",
  "elevation_licence": "Open Government Licence v3 \u2014 \u00a9 Crown copyright Welsh Government",
  "elevation_catalogue_layer": "geonode:welsh_government_lidar_tile_catalogue_2020_2023",
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   "wg_del_13_306249_20210317dtm.tif",
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   "wg_del_16_304248_20210329dtm.tif",
   "wg_del_16_304249_20210329dtm.tif",
   "wg_del_16_305246_20210329dtm.tif",
   "wg_del_16_305247_20210329dtm.tif",
   "wg_del_16_306246_20210329dtm.tif",
   "wg_del_16_306247_20210329dtm.tif"
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  "elevation_capture_dates": [
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  "route_summit_trim_m": 1935.7,
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  "climb_origin": "discovered",
  "notes": "Coarse pass: max 15.5% over 200 m (Terrain 50), gain 151.2 m over 4550 m way. EXTENDED by graph walk: +1 segment(s) at base, +0 at top (stop: base=no_descending_continuation, top=no_ascending_continuation; min_avg=2.0%). Review before adopting. ADOPTED (notable slice 2026-08-11): qualified-steep. AUTO-NAMED from gazetteer (hypothesis, unreviewed): was 'Discovered lane (52.1258, -3.3733)'."
 },
 "confidence": "B"
}