- Category: Geographic Feature
- Type: Valley
- Latitude/Longitude: 52°18'12"N 3°51'35"W
- Eastings/Northings: 273287, 268890
- OS Grid: SN732688
- Mapcode Local: GBR 92.X08S
- Mapcode Global: VH4G2.1CTH
Location and coordinates are for the approximate centre of Cwm Gwyddyl within this administrative area.
Geographic features and populated places may cross administrative borders.