- Category: Geographic Feature
- Type: Valley
- Latitude/Longitude: 52°0'33"N 3°36'31"W
- Eastings/Northings: 289682, 235748
- OS Grid: SN896357
- Mapcode Local: GBR YD.HMHC
- Mapcode Global: VH5F0.DRKM
Location and coordinates are for the approximate centre of Cwm Mawan within this administrative area.
Geographic features and populated places may cross administrative borders.