- Category: Geographic Feature
- Type: Valley
- Latitude/Longitude: 51°25'14"N 3°20'46"W
- Eastings/Northings: 306497, 169936
- OS Grid: ST064699
- Mapcode Local: GBR HQ.PM1Z
- Mapcode Global: VH6FH.YKD7
Location and coordinates are for the approximate centre of Cwm-y-Breach within this administrative area.
Geographic features and populated places may cross administrative borders.