- Category: Geographic Feature
- Type: Valley
- Latitude/Longitude: 51°32'19"N 3°38'6"W
- Eastings/Northings: 286691, 183473
- OS Grid: SS866834
- Mapcode Local: GBR HB.G6BC
- Mapcode Global: VH5H9.YL26
Location and coordinates are for the approximate centre of Cwm Ffos within this administrative area.
Geographic features and populated places may cross administrative borders.