- Category: Geographic Feature
- Type: Hill or Mountain
- Latitude/Longitude: 51°45'58"N 3°27'27"W
- Eastings/Northings: 299500, 208500
- OS Grid: SN995085
- Mapcode Local: GBR YL.ZWFS
- Mapcode Global: VH6CQ.0VWY
Location and coordinates are for the approximate centre of Onllwyn within this administrative area.
Geographic features and populated places may cross administrative borders.