- Category: Geographic Feature
- Type: Valley
- Latitude/Longitude: 51°35'12"N 3°33'3"W
- Eastings/Northings: 292649, 188690
- OS Grid: SS926886
- Mapcode Local: GBR HF.C9JR
- Mapcode Global: VH5H5.DCMX
Location and coordinates are for the approximate centre of Cwm Nant-y-Ci within this administrative area.
Geographic features and populated places may cross administrative borders.