- Category: Geographic Feature
- Type: Hill or Mountain
- Latitude/Longitude: 60°46'46"N 0°55'5"W
- Eastings/Northings: 459024, 1211230
- OS Grid: HP590112
- Mapcode Local: GBR S027.XLD
- Mapcode Global: XHF74.G9WZ
Location and coordinates are for the approximate centre of Houllna Gruna within this administrative area.
Geographic features and populated places may cross administrative borders.