- Category: Water Feature
- Type: Island
- Latitude/Longitude: 57°42'55"N 6°59'46"W
- Eastings/Northings: 102586, 880506
- OS Grid: NG025805
- Mapcode Local: GBR 983B.B6K
- Mapcode Global: WGW2X.HBMK
Location and coordinates are for the approximate centre of Dùn Àrn within this administrative area.
Geographic features and populated places may cross administrative borders.