Size: height of 2,886 m/9,469 ft.
Location: Northern Tanzania, 300 km (190 miles) Northwest of Arusha.
Ol doinyo Lengai (pronounced ol doyn-yo len-guy) is an active volcano in the Eastern Rift Valley, and it is home to the Masai God Eng'ai, who signals her wrath with eruptions and drought. The name means 'Mountain of God' in the language of the Masai people who inhabit this area. Ol doinyo Lengai is a unique and extremely fascinating volcano that towers above the East African Rift Valley in Northern Tanzania, just south of . It is located on the way between and the and is part of many of our itineraries. Geologists are particularly interested in Ol doinyo Lengai because It is the only volcano in the world that erupts natrocarbonatite lava, a highly fluid lava that contains almost no silicon. Oldoinyo Lengai is also the only active volcano in this part of the Rift Valley, though there are many older extinct volcanoes in this region. The mountain rises a startling 2,886 m/9,469 ft above the parched Rift Valley floor.
Referred to as the strangest volcano on Earth, Ol doinyo Lengai earns
its reputation when it erupts. Unusually cool, highly fluid lava
produces a whimsical world of geologic fantasies that include
extrusions frozen in flight. These natrocarbonatite flows have a
chemical composition akin to laundry soap, and exposed to the
atmosphere, the lava quickly hardens and decays. Unlike common basalt
lavas, which are sticky with silica, Lengai’s lavas are mostly slick
sodium carbonate with the viscosty of olive oil. Volcanic froth rich in
carbon dioxide can spew into the air as liquid lava and harden in
midair. Some of the big drops can form little parachutes, and look like
silver flying through the air before hitting the ground with the sound
of breaking glass. Lengai’s Dr. Seussian formations can crumble a day
after they are born, and you can judge their age by their color. Even
raindrops accelerate the decomposition. |
