- Category: Geographic Feature
- Type: Valley
- Latitude/Longitude: 52°6'30"N 3°41'33"W
- Eastings/Northings: 284178, 246923
- OS Grid: SN841469
- Mapcode Local: GBR Y8.9BPJ
- Mapcode Global: VH5DK.Y86G
Location and coordinates are for the approximate centre of Cwm Lletgwial within this administrative area.
Geographic features and populated places may cross administrative borders.