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  "calculated_at": "2026-08-12T09:07:53+00:00",
  "road_source": "OpenStreetMap (local PBF extract)",
  "road_attribution": "\u00a9 OpenStreetMap contributors, ODbL",
  "osm_pbf_path": "data/cache/pbf/wales-2026-08-11.osm.pbf",
  "osm_snapshot": "2026-08-10T20:21:40Z",
  "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_28_256245_20220314dtm.tif",
   "wg_del_28_257242_20220314dtm.tif",
   "wg_del_28_257243_20220314dtm.tif",
   "wg_del_28_257244_20220314dtm.tif",
   "wg_del_28_257245_20220314dtm.tif",
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   "wg_del_30_257246_20220314dtm.tif"
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  "elevation_capture_dates": [
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  "climb_origin": "discovered",
  "notes": "Coarse pass: max 12.4% over 200 m (Terrain 50), gain 141.2 m over 3487 m way. EXTENDED by graph walk: +2 segment(s) at base, +2 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-52-0648-4-0899 ADOPTED (notable slice 2026-08-11): big-gain. AUTO-NAMED from gazetteer (hypothesis, unreviewed): was 'Discovered lane (52.0829, -4.0876)'.",
  "naming_note": "auto-named from gazetteer (hypothesis, unreviewed); discovered as 'Discovered lane (52.0829, -4.0876)'"
 },
 "area": {
  "place": "Parc-y-rh\u00f4s",
  "county": "Sir Gaerfyrddin - Carmarthenshire"
 },
 "reported_claims": [],
 "confidence": "U",
 "shape": {
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  "longest_pitch_10pct_m": 152.0,
  "shape_class": "sustained"
 }
}