It is fed by waters from Loch Quoich 10 km upstream on the River Garry, and drains into Loch Oich in the Great Glen just 5 km downstream.

Loch Garry is much photographed from the A87 for its romantic setting and also because a quirk of perspective makes it appear like a map of Scotland.

Water is fed by tunnel to the two power stations each producing 20MW, and the scheme was completed in 1962.

The Glen used to be home of the Clan MacDonell of Glengarry, but since the Highland Clearances the population has been reduced to a handful of estates.

The main activities are deer stalking and forestry, with little tourism apart from Munro-baggers seeking some spectacularly remote mountains at the head of the glen.