- Category: Geographic Feature
- Type: Valley
- Latitude/Longitude: 51°58'55"N 4°50'11"W
- Eastings/Northings: 205310, 235313
- OS Grid: SN053353
- Mapcode Local: GBR CR.K90K
- Mapcode Global: VH2N5.4F0W
Location and coordinates are for the approximate centre of Cwm Collen within this administrative area.
Geographic features and populated places may cross administrative borders.