Cruach an t-Sidhein is a Graham of 683.6 m in Argyll and Bute. All four of its nearest neighbours are higher, up to Doune Hill at 734.5 m.
On the Grahams height ladder it sits between Leana Mhor (Highland, NN284878) (683.9 m) and Beinn a' Chaisgein Beag (682.3 m). Its nearest higher summit, Beinn Lochain (697.8 m, 1.3 km east), is a listed top not profiled here.