- Category: Geographic Feature
- Type: Valley
- Latitude/Longitude: 51°42'7"N 3°9'8"W
- Eastings/Northings: 320460, 201001
- OS Grid: SO204010
- Mapcode Local: GBR HZ.3V2D
- Mapcode Global: VH6D8.9HT0
Location and coordinates are for the approximate centre of Cwm-nant-gwynt within this administrative area.
Geographic features and populated places may cross administrative borders.