- Category: Geographic Feature
- Type: Valley
- Latitude/Longitude: 52°1'13"N 3°33'4"W
- Eastings/Northings: 293649, 236916
- OS Grid: SN936369
- Mapcode Local: GBR YG.GXD6
- Mapcode Global: VH5F1.DHF0
Location and coordinates are for the approximate centre of Cwm Dyryn within this administrative area.
Geographic features and populated places may cross administrative borders.