This Glen offers awesome mountain scenery. The Braeroy Road, one of the "Scenic Routes", turning off the A86 in Roybridge, climbs steeply past a parking area on the flank of Beinn a Mhonicag. The views north from here take in a considerable length of the glen and make this the best place from which to appreciate the most spectacular example of a landscape formed in the last ice age to be found anywhere in Britain. The "parallel roads" are clearly visible. These perfectly parallel "tracks" run along both sides of the glen and are actually lines left by the shoreline of a vast loch that filled Glen Roy some 10,000 years ago, held in place by a dam of ice formed by the head of a glacier that advanced from the south west.