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Tanzania Safari

Oldoinyo Lengai_from_Natron

Mount Ol Doinyo Lengai


Mount Ol Doinyo Lengai

Mount Ol-Doinyo Lengai is located South of Lake Natron in the eastern rift valley of North Tanzania. (locally regarded as the sacred Mountain of God in the Maasai Language), an active volcano. At 2878 meters, Mt. Oldonyo Lengai is the only known volcano in the world that sometimes erupts. Natrocarbonatite lava (most fluid lava) is also much cooler than other lavas.  During the day most of this lava flows look like fluid black oil. Some feel the lava flows resemble mud like-flows.  Nitro-carbonatite lava turns white when in contact with moisture.  During rainy periods, the lava turns white almost immediately whilst this whitening takes longer during the dry periods.

Mount Oldoinyo Lengai also has phases of explosive activity during which the composition of the lava may contain much more silicate material. With this type of eruption, initial phases of the eruption may include strong lava fountains but usually, there is no fluid lava and ash eruptions accompanied by ejection of rocks and explosions occurs.  The two most recent eruptions of this type occurred during 2007-2008.  Almost without fail, about every seven years this mount erupts and plumes of smoke billowing out of the crater. At other times it is possible to walk down into the crater, almost to the edge of the molten lava flows.

Views in the north from its summit crater lies the hot barren salt flats of Lake Natron stretch into the distance, beyond lies the Kenyan border. The day temperatures by the lake often exceed 40°C and a few animals survive here with the flamingo making its home here as breeding grounds, nesting on the salty surface on upraised mounds. The view on the east is dominated by Mount Kilimanjaro and to the west the forested escarpments and hills comprising the western slopes of the Great African Rift Valley.

To the south stretches the Crater Highlands, Ngorongoro Crater is one of the prime wildlife conservation areas in Africa.

The ascent of Oldoinyo Lengai is demanding on account of the daytime heat, lack of water, steep and unstable slopes of ash and crumbly rocks. An early start is recommended and the best approach is from the west where the morning sun can be avoided for a while.

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