- Category: Geographic Feature
- Type: Valley
- Latitude/Longitude: 51°52'54"N 3°57'35"W
- Eastings/Northings: 265207, 222183
- OS Grid: SN652221
- Mapcode Local: GBR DX.RQFC
- Mapcode Global: VH4HY.9YZQ
Location and coordinates are for the approximate centre of Cwm Breinant within this administrative area.
Geographic features and populated places may cross administrative borders.