- Category: Geographic Feature
- Type: Valley
- Latitude/Longitude: 52°46'12"N 3°54'21"W
- Eastings/Northings: 271517, 320878
- OS Grid: SH715208
- Mapcode Local: GBR 5Z.YKPP
- Mapcode Global: WH56G.ZM6N
Location and coordinates are for the approximate centre of Cwm yr Wnin within this administrative area.
Geographic features and populated places may cross administrative borders.