- Category: Geographic Feature
- Type: Hill or Mountain
- Latitude/Longitude: 51°50'7"N 3°14'21"W
- Eastings/Northings: 314703, 215931
- OS Grid: SO147159
- Mapcode Local: GBR YW.VH46
- Mapcode Global: VH6CM.S4V7
Location and coordinates are for the approximate centre of Blaen Onneu within this administrative area.
Geographic features and populated places may cross administrative borders.