The mountain can be climbed in 6 hours, affording breathtaking views of the Great Rift Valley and volcanic formations in the Ngorongoro highlands as you get to the summit. It is an adventurous hike starting at dawn. Remember this is an active volcano, the mountain remains closed for climbing when we have eruptions. Lying on the base of the mountain, Lake Natron is said to be the only breeding area for the endangered Lesser Flamingoes that live in the Great Rift Valley and it is believed to be the world’s most important breeding site for the Lesser Flamingoes, accounting for 75 per cent of the global population.

The soda lake sits on the lowest point of the Great Rift Valley part in East Africa and is quite shallow, less than three metres deep, and varies in width depending on its water level. The temperatures in the lake mud can reach more than 40 degrees Celsius where evaporation causes high alkalinity. It is said the lake’s high alkaline environment is a barrier against predators trying to reach the flamingo nests.The area around Lake Natron is often described as having a desolate and almost lunar landscape beauty. Walks around the lake and to the streams and waterfalls along the nearby escarpment, make for a fantastic adventure off the beaten track
South of Lake Natron in the eastern rift valley of North Tanzania, lies Mount Ol Doinyo Lengai (locally regarded as the sacred Mountain of God in the Maa Language), an active volcano.

At 2878meters, Mt. Ol Doinyo Lengai is the only known volcano in the world that sometimes erupts natrocarbonatite lava, a highly fluid lava that contains almost no silicon. 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. Natrocarbonatite 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 Ol Doinyo 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 1966-1967 and 2007-2008. Almost without fail, about every seven years Ol doinyo Lengai erupts and plumes of smoke billow 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 Mt 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 being one of the prime wildlife conservation areas in Africa.
The ascent of Ol doinyo Lengai is demanding on account of the day time 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