 The other two ridges, which form a horseshoe around the Allt Coulavie valley to the south of the summit, carry the “tops” of An Tudair (1074 metres) and Creag Coire nan Each (1055 metres).The mountain's western flanks fall away towards Gleann a’ Choilich, which drains northwards into Loch Mullardoch.Mam Sodhail was an important part of the Ordnance Survey’s initial mapping of the northern Highlands in the 1840s, and the summit carries a massive cairn which was used by the surveyors in their work.