- Category: Geographic Feature
- Type: Valley
- Latitude/Longitude: 52°51'33"N 3°21'5"W
- Eastings/Northings: 309109, 329959
- OS Grid: SJ091299
- Mapcode Local: GBR 6Q.RVT8
- Mapcode Global: WH78M.HD98
Location and coordinates are for the approximate centre of Cwm Ffynnon within this administrative area.
Geographic features and populated places may cross administrative borders.