- Category: Geographic Feature
- Type: Valley
- Latitude/Longitude: 51°48'47"N 3°13'9"W
- Eastings/Northings: 316039, 213447
- OS Grid: SO160134
- Mapcode Local: GBR YX.WVFX
- Mapcode Global: VH6CN.4PX9
Location and coordinates are for the approximate centre of Cwm Carneilw within this administrative area.
Geographic features and populated places may cross administrative borders.