- Category: Geographic Feature
- Type: Valley
- Latitude/Longitude: 51°57'28"N 3°31'10"W
- Eastings/Northings: 295682, 229922
- OS Grid: SN956299
- Mapcode Local: GBR YH.LZK0
- Mapcode Global: VH5FF.Y16T
Location and coordinates are for the approximate centre of Cwm Lliw within this administrative area.
Geographic features and populated places may cross administrative borders.