- Category: Geographic Feature
- Type: Valley
- Latitude/Longitude: 52°5'32"N 3°33'55"W
- Eastings/Northings: 292843, 244943
- OS Grid: SN928449
- Mapcode Local: GBR YG.B67C
- Mapcode Global: VH5DN.4NWT
Location and coordinates are for the approximate centre of Cwm-mwyn within this administrative area.
Geographic features and populated places may cross administrative borders.