- Category: Geographic Feature
- Type: Valley
- Latitude/Longitude: 57°11'42"N 5°25'10"W
- Eastings/Northings: 193500, 816760
- OS Grid: NG935167
- Mapcode Local: GBR F90P.SDJ
- Mapcode Global: WH0BQ.QFF2
Location and coordinates are for the approximate centre of Gleann Undalain within this administrative area.
Geographic features and populated places may cross administrative borders.