The Mountain with the Coolest Lava on Earth Ol doinyo Lengai, (which means “Mountain of God” in the local Maasai language), is an active volcano located on southern shore of Lake Natron in the greater Arusha Region. The mountain is a stratovolcano standing at 2870m above sea level, built up by several layers of hardened lava shaped nearly to a perfect cone.  Apart from its regular eruptions, the volcano is