- Category: Geographic Feature
- Type: Valley
- Latitude/Longitude: 52°35'53"N 3°43'30"W
- Eastings/Northings: 283252, 301433
- OS Grid: SH832014
- Mapcode Local: GBR 97.9HGC
- Mapcode Global: WH68G.RY9L
Location and coordinates are for the approximate centre of Cwm Ysberwyn within this administrative area.
Geographic features and populated places may cross administrative borders.