- Category: Geographic Feature
- Type: Other Coastal Landform
- Latitude/Longitude: 60°43'32"N 1°3'4"W
- Eastings/Northings: 451860, 1205100
- OS Grid: HP518051
- Mapcode Local: GBR R0RD.8XV
- Mapcode Global: XHF78.QNTW
Location and coordinates are for the approximate centre of Houllnan Geo within this administrative area.
Geographic features and populated places may cross administrative borders.