Mount Ararat is a snow-capped, dormant volcanic cone in Turkey. It has two peaks: Greater Ararat (the tallest peak in Turkey, and the entire Armenian plateau with an elevation of 5,137 m (16,854 ft)) and Lesser Ararat (with an elevation of 3,896 m (12,782 ft)). The Ararat massif is about 40 km in diameter. The Iran-Turkey boundary skirts east of Lesser Ararat, the lower peak of the Ararat massif. It was in this area that by the Tehran Convention of 1932 a border change was made in Turkey's favor, permitting her to occupy the eastern flank of the massif; This flank had in the past been used by Kurdish tribes to organize uprisings against Turkey. It is not known when the last eruption of Ararat occurred; there are no historic or recent observations of large-scale activity recorded. It seems that Ararat was active in the 3rd millennium BC; under the pyroclastic flows, artifacts from the early Bronze Age and remains of human bodies have been found.