- Category: Geographic Feature
- Type: Valley
- Latitude/Longitude: 52°32'49"N 3°38'56"W
- Eastings/Northings: 288276, 295633
- OS Grid: SN882956
- Mapcode Local: GBR 9B.DQ6T
- Mapcode Global: VH5BG.P7RQ
Location and coordinates are for the approximate centre of Cwm Du within this administrative area.
Geographic features and populated places may cross administrative borders.