- Category: Water Feature
- Type: Island
- Latitude/Longitude: 56°50'40"N 7°37'31"W
- Eastings/Northings: 57165, 786686
- OS Grid: NL571866
- Mapcode Local: GBR 7BKM.Q4F
- Mapcode Global: WGV5Q.V736
Location and coordinates are for the approximate centre of Hèisgeir a-muigh within this administrative area.
Geographic features and populated places may cross administrative borders.