- Category: Geographic Feature
- Type: Hill or Mountain
- Latitude/Longitude: 52°5'39"N 3°41'14"W
- Eastings/Northings: 284503, 245326
- OS Grid: SN845453
- Mapcode Local: GBR Y9.B604
- Mapcode Global: VH5DL.1MHG
Location and coordinates are for the approximate centre of Pen Derlwyn within this administrative area.
Geographic features and populated places may cross administrative borders.