- Category: Geographic Feature
- Type: Valley
- Latitude/Longitude: 51°37'53"N 3°35'53"W
- Eastings/Northings: 289485, 193736
- OS Grid: SS894937
- Mapcode Local: GBR HC.8HMY
- Mapcode Global: VH5GY.L851
Location and coordinates are for the approximate centre of Cwm Gwyn within this administrative area.
Geographic features and populated places may cross administrative borders.