East Africa’s only active volcano, Ol Doinyo Lengai, is situated south of Lake Natron. In the Maasai the name means the sacred Mountain of God. Ol Doinyo Lengai is 2878m high and it has explosive eruptions every twenty to forty years.Climbs are mostly organized after midnight to reach the summit in the sunrise.Although the rout is hard because of the heat ( 40°C) and hikers are advised to be extremely cautious, the views from Mount Lengai are astonishing. In the north Lake Natron is visible, in the west the Great Rift Valley, and the eastern part offers majestic views of Mount Kilimanjaro.