- Category: Geographic Feature
- Type: Hill or Mountain
- Latitude/Longitude: 53°8'2"N 3°51'21"W
- Eastings/Northings: 275927, 361259
- OS Grid: SH759612
- Mapcode Local: GBR 61.6KT5
- Mapcode Global: WH54R.QHZ8
Location and coordinates are for the approximate centre of Mynydd Deulyn within this administrative area.
Geographic features and populated places may cross administrative borders.