- Category: Geographic Feature
- Type: Valley
- Latitude/Longitude: 52°4'9"N 4°46'4"W
- Eastings/Northings: 210388, 244832
- OS Grid: SN103448
- Mapcode Local: GBR CV.CVBD
- Mapcode Global: VH2MT.98S0
Location and coordinates are for the approximate centre of Cwm Pen-Wern within this administrative area.
Geographic features and populated places may cross administrative borders.