- Category: Geographic Feature
- Type: Valley
- Latitude/Longitude: 51°37'37"N 3°35'59"W
- Eastings/Northings: 289362, 193248
- OS Grid: SS893932
- Mapcode Local: GBR HC.8P8D
- Mapcode Global: VH5GY.KC9J
Location and coordinates are for the approximate centre of Cwmgwinau within this administrative area.
Geographic features and populated places may cross administrative borders.