- Category: Geographic Feature
- Type: Valley
- Latitude/Longitude: 51°35'59"N 3°43'15"W
- Eastings/Northings: 280906, 190404
- OS Grid: SS809904
- Mapcode Local: GBR H6.BGSB
- Mapcode Global: VH5H2.G18V
Location and coordinates are for the approximate centre of Cwm Wernderi within this administrative area.
Geographic features and populated places may cross administrative borders.