- Category: Geographic Feature
- Type: Valley
- Latitude/Longitude: 52°59'57"N 4°9'53"W
- Eastings/Northings: 254809, 346866
- OS Grid: SH548468
- Mapcode Local: GBR 5N.H2QB
- Mapcode Global: WH555.ZVVZ
Location and coordinates are for the approximate centre of Cwm Llefrith within this administrative area.
Geographic features and populated places may cross administrative borders.