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   "data/cache/wales/dtm_1m/wg_del_1_318347_20200326dtm.tif",
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   "data/cache/wales/dtm_1m/wg_del_1_319345_20200326dtm.tif",
   "data/cache/wales/dtm_1m/wg_del_1_319346_20200326dtm.tif",
   "data/cache/wales/dtm_1m/wg_del_1_319347_20200326dtm.tif",
   "data/cache/wales/dtm_1m/wg_del_1_319348_20200326dtm.tif",
   "data/cache/wales/dtm_1m/wg_del_1_320345_20200326dtm.tif",
   "data/cache/wales/dtm_1m/wg_del_1_320346_20200326dtm.tif",
   "data/cache/wales/dtm_1m/wg_del_1_320347_20200326dtm.tif",
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  "calculated_at": "2026-08-13T02:13:16+00:00",
  "road_source": "wales-discovered-adopted-routes/horseshoe-pass.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",
  "elevation_tile_ids": [
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   "wg_del_1_318346_20200326dtm.tif",
   "wg_del_1_318347_20200326dtm.tif",
   "wg_del_1_318348_20200326dtm.tif",
   "wg_del_1_319345_20200326dtm.tif",
   "wg_del_1_319346_20200326dtm.tif",
   "wg_del_1_319347_20200326dtm.tif",
   "wg_del_1_319348_20200326dtm.tif",
   "wg_del_1_320345_20200326dtm.tif",
   "wg_del_1_320346_20200326dtm.tif",
   "wg_del_1_320347_20200326dtm.tif",
   "wg_del_1_320348_20200326dtm.tif"
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  "elevation_capture_dates": [
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  "route_summit_trim_m": 1292.0,
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  "climb_origin": "discovered",
  "notes": "Coarse pass: max 10.6% over 200 m (Terrain 50), gain 130.1 m over 4680 m way. EXTENDED by graph walk: +7 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-52-9976-3-1928 ROAD-REVIEW: way 105260775: unnamed service way; way 105260775: service way, surface untagged ADOPTED (notable slice 2026-08-11): listed."
 },
 "confidence": "B"
}