- Category: Geographic Feature
- Type: Valley
- Latitude/Longitude: 51°43'2"N 2°54'2"W
- Eastings/Northings: 337869, 202450
- OS Grid: SO378024
- Mapcode Local: GBR J9.3514
- Mapcode Global: VH79V.N3VB
Location and coordinates are for the approximate centre of Cwm Cayo within this administrative area.
Geographic features and populated places may cross administrative borders.