- Category: Geographic Feature
- Type: Valley
- Latitude/Longitude: 51°53'34"N 3°23'59"W
- Eastings/Northings: 303765, 222517
- OS Grid: SO037225
- Mapcode Local: GBR YN.QZ60
- Mapcode Global: VH6C5.0PZ8
Location and coordinates are for the approximate centre of Cwm Cynwyn within this administrative area.
Geographic features and populated places may cross administrative borders.