- Category: Geographic Feature
- Type: Valley
- Latitude/Longitude: 53°8'22"N 3°42'44"W
- Eastings/Northings: 285555, 361654
- OS Grid: SH855616
- Mapcode Local: GBR 67.6BNY
- Mapcode Global: WH65Y.YBDW
Location and coordinates are for the approximate centre of Nant Rhenfaes within this administrative area.
Geographic features and populated places may cross administrative borders.