- Category: Geographic Feature
- Type: Valley
- Latitude/Longitude: 51°55'18"N 3°44'47"W
- Eastings/Northings: 279996, 226263
- OS Grid: SN799262
- Mapcode Local: GBR Y6.P3CH
- Mapcode Global: VH5FB.0YRK
Location and coordinates are for the approximate centre of Cwm Holdfast within this administrative area.
Geographic features and populated places may cross administrative borders.