- Category: Geographic Feature
- Type: Valley
- Latitude/Longitude: 52°4'4"N 4°46'15"W
- Eastings/Northings: 210175, 244699
- OS Grid: SN101446
- Mapcode Local: GBR CV.CTGR
- Mapcode Global: VH2MT.8950
Location and coordinates are for the approximate centre of Cwm Ffynnon-Alwm within this administrative area.
Geographic features and populated places may cross administrative borders.