A glen in the southern Grampians, Glen Prosen occupies the valley of the Prosen Water in the Braes of Angus. There is a memorial cairn at the foot of the glen dedicated to the memory of the Antarctic explorers Captain Robert Falcon Scott (1868-1922) and Dr Edward Wilson (1872-1912) who used to visit this locality.
Glenprosen village sits on the slopes of the Hill of Spott and overlooking the Prosen Water on Tulloch Hill is the Airlie Monument, a copy of one of the towers of Airlie Castle erected to the memory of the 9th Earl of Airlie, who was killed in the Boer War.
The road extends to Runtaleave, two-thirds of the way up the glen, leaving the upper section secluded. The head of the glen is overlooked by Mayar (928m / 3045 feet) and Driesh (947m / 3107 feet).