- Category: Geographic Feature
- Type: Valley
- Latitude/Longitude: 52°0'48"N 3°32'39"W
- Eastings/Northings: 294115, 236136
- OS Grid: SN941361
- Mapcode Local: GBR YG.HCJ0
- Mapcode Global: VH5F1.JN49
Location and coordinates are for the approximate centre of Cwm Llythin within this administrative area.
Geographic features and populated places may cross administrative borders.