- Category: Geographic Feature
- Type: Valley
- Latitude/Longitude: 52°22'20"N 3°33'25"W
- Eastings/Northings: 294099, 276071
- OS Grid: SN940760
- Mapcode Local: GBR 9G.RNWT
- Mapcode Global: VH5C9.9MFP
Location and coordinates are for the approximate centre of Cwm y Saeson within this administrative area.
Geographic features and populated places may cross administrative borders.