- Category: Geographic Feature
- Type: Valley
- Latitude/Longitude: 53°7'19"N 4°4'18"W
- Eastings/Northings: 261459, 360337
- OS Grid: SH614603
- Mapcode Local: GBR 5S.77DR
- Mapcode Global: WH54N.FS9B
Location and coordinates are for the approximate centre of Cwm Dudodyn within this administrative area.
Geographic features and populated places may cross administrative borders.