- Category: Geographic Feature
- Type: Valley
- Latitude/Longitude: 51°41'2"N 3°3'21"W
- Eastings/Northings: 327095, 198884
- OS Grid: ST270988
- Mapcode Local: GBR J3.520M
- Mapcode Global: VH79R.ZX9X
Location and coordinates are for the approximate centre of Cwm Lleucu within this administrative area.
Geographic features and populated places may cross administrative borders.