- Category: Geographic Feature
- Type: Valley
- Latitude/Longitude: 52°32'41"N 3°28'15"W
- Eastings/Northings: 300346, 295134
- OS Grid: SO003951
- Mapcode Local: GBR 9L.DL37
- Mapcode Global: VH5BK.S9DF
Location and coordinates are for the approximate centre of Cwm Mawr within this administrative area.
Geographic features and populated places may cross administrative borders.