It is east from Bridge of Orchy, overlooking Loch Lyon to the south and Gleann Cailliche to the north.

The mountain has two rounded summits; the western one is called Beinn a 'Chuirn and rises to 923 metres (3,028 ft).

From the West Highland Line and the A82 road, the mountain can be seen clearly 8 km north-east up the Auch Gleann.

The poet Duncan Ban MacIntyre, whose most well-known poem "Moladh Beinn Dòbhrain" celebrated nearby Beinn Dorain, lived for a number of years in a cottage, now a ruin and used as a sheep fank,[5] at Ais-an-t-Sidhean at the head of Auch Gleann.

To reach the summit dome of the mountain the slopes to the north-east of Beinn a'Chuirn are traversed.