Mount Ararat consists of two distinct volcanic cones, Greater Ararat and Lesser Ararat (Little Ararat). The western volcanic cone, Greater Ararat, is a steep-sided volcanic cone that is larger and higher than the eastern volcanic cone. Greater Ararat is about wide at the base and rises about above the adjacent floors of the Iğdir and Doğubeyazıt basins. The eastern volcanic cone, Lesser Ararat, is high and across. These volcanic cones, which lie apart, are separated by a wide north–south-trending crack. This crack is the surface expression of an extensional fault. Numerous parasitic cones and lava domes have been built by flank eruptions along this fault and on the flanks of both of the main volcanic cones.