- Category: Geographic Feature
- Type: Hill or Mountain
- Latitude/Longitude: 51°55'28"N 3°8'45"W
- Eastings/Northings: 321302, 225735
- OS Grid: SO213257
- Mapcode Local: GBR F0.NVPH
- Mapcode Global: VH6C3.FW8G
Location and coordinates are for the approximate centre of Pen Twyn Glas within this administrative area.
Geographic features and populated places may cross administrative borders.