- Category: Geographic Feature
- Type: Hill or Mountain
- Latitude/Longitude: 52°55'0"N 4°8'58"W
- Eastings/Northings: 255565, 337640
- OS Grid: SH555376
- Mapcode Local: GBR 5P.N6GT
- Mapcode Global: WH55L.7Y8C
Location and coordinates are for the approximate centre of Pen Llyn within this administrative area.
Geographic features and populated places may cross administrative borders.