- Category: Geographic Feature
- Type: Valley
- Latitude/Longitude: 51°35'2"N 3°30'40"W
- Eastings/Northings: 295391, 188305
- OS Grid: SS953883
- Mapcode Local: GBR HH.CFHM
- Mapcode Global: VH5H6.3G34
Location and coordinates are for the approximate centre of Cwm Gadlys within this administrative area.
Geographic features and populated places may cross administrative borders.