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  "road_source": "OpenStreetMap (local PBF extract)",
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  "elevation_provider": "Scottish Remote Sensing Portal (AWS Open Data, srsp-open-data)",
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  "notes": "Coarse pass: max 10.6% over 200 m (Terrain 50), gain 136.8 m over 6492 m way. EXTENDED by graph walk: +1 segment(s) at base, +2 at top (stop: base=no_descending_continuation, top=no_ascending_continuation; min_avg=2.0%). Review before adopting. ADOPTED (Scotland launch 2026-08-18): big-gain. AUTO-NAMED from gazetteer (hypothesis, unreviewed): was 'Discovered lane (57.7841, -5.0385)'.",
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  "county": "Highland"
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}