- Category: Geographic Feature
- Type: Valley
- Latitude/Longitude: 51°48'19"N 3°6'42"W
- Eastings/Northings: 323443, 212457
- OS Grid: SO234124
- Mapcode Local: GBR F1.XJRB
- Mapcode Global: VH795.0WS8
Location and coordinates are for the approximate centre of Cwm Dyar within this administrative area.
Geographic features and populated places may cross administrative borders.