- Category: Geographic Feature
- Type: Valley
- Latitude/Longitude: 51°51'34"N 3°54'50"W
- Eastings/Northings: 268298, 219610
- OS Grid: SN682196
- Mapcode Local: GBR DZ.T3TD
- Mapcode Global: VH4J5.3JQC
Location and coordinates are for the approximate centre of Glyn Llydan within this administrative area.
Geographic features and populated places may cross administrative borders.