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  "elevation_provider": "Environment Agency",
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  "notes": "Coarse pass: max 11.0% over 200 m (Terrain 50), gain 54.1 m over 749 m way. EXTENDED by graph walk: +3 segment(s) at base, +1 at top (stop: base=no_descending_continuation, top=no_ascending_continuation; min_avg=2.0%). Review before adopting. DEDUPE: absorbed 3 overlapping proposal(s): discovered-lane-51-2128-3-6603, pitt-lane-3, worthy-toll-road"
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}