- Category: Geographic Feature
- Type: Valley
- Latitude/Longitude: 52°46'21"N 3°36'24"W
- Eastings/Northings: 291694, 320642
- OS Grid: SH916206
- Mapcode Local: GBR 6D.YD9X
- Mapcode Global: WH67R.KKNW
Location and coordinates are for the approximate centre of Cwm Cerddin within this administrative area.
Geographic features and populated places may cross administrative borders.