Oldoinyo Lengai” means “The Mountain of God” in the Maasai language. The summit of this strato-volcano is 2962 meters above sea level and affords direct views into the caldera of Tanzania’s only officially-certified active volcano, and the world’s only carbonatite volcano; records of eruptions have been maintained since 1883, the largest of which deposited ash 100 kilometers away in Loliondo on the Kenyan border to the northwest.
It is located in northern Tanzania lying just south of Lake Natron in the Rift Valley, in the heart of Maasai country, and is locally regarded as a sacred mountain. Looking north from its summit crater, the hot barren salt flats of Lake Natron stretch into the distance. To the south stretch the crater Highlands and the Ngorongoro Game Reserve. The eastern horizons are dominated by Kilimanjaro and to the west, the forested escarpments and hills comprise the western slopes of the Rift Valley. Every seven years Lengai erupts and plumes of smoke billow out of the crater.
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The climb involves a fairly straight climb to the crater rim, followed by a long descent back to the starting point. It’s a very steep climb and ascent, so isn’t for the fainthearted!
Ol Doinyo Lengai is also quite unusual for being a night-time climb. Only the descent is down in the daylight. As we discuss in a bit, this is done to avoid the worst heat of the day. Setting off at around midnight adds an extra layer of adventure to the whole affair!
From Moshi, Arusha, or Karatu you will drive to Oldonyo Lake Natron
A soda lake at the base of the active Ol Donyo Lengai volcano, the area around Lake Natron is often described as having a desolate and almost lunar beauty. Lake Natron is found in the northern part of Tanzania. The nearest towns to Lake Natron are Arusha in Tanzania and Magadi in Kenya. It is the most important breeding site for Lesser Flamingos in the world.
East Africa has 1.5-2.5 million Lesser Flamingos, representing three-quarters of the world population and most of them are hatched at Lake Natron. Food is plentiful, nesting sites abound – and above all, the lake is isolated and undisturbed. The lake and its ecosystem provide a source of livelihood to the local communities.
Walking around the lake and to the streams and waterfalls along the nearby escarpment makes for a fantastic adventure off the beaten track.
There are a number of campgrounds near the lake, which is also the base for climbing Ol Doinyo Lengai.
You will climb Mount Oldonyo Lengai at midnight. It will take you 5-7 hours up and down.
Oldoinyo Lengai” means “The Mountain of God” in the Maasai language. The summit of this strato-volcano is 2962 meters above sea level and affords direct views into the caldera of Tanzania’s only officially-certified active volcano, and the world’s only carbonatite volcano; records of eruptions have been maintained since 1883, the largest of which deposited ash 100 kilometers away in Loliondo on the Kenyan border to the northwest.
It is possible to walk across the crater floor. The ascent of Oldoinyo Lengai is demanding on account of the daytime heat, lack of water, steep and unsuitable slopes of ash and crumbly rocks, and considerable height gain. Normally you can start ascending to the summit early in the morning and reach to the summit at sunrise. Short and a warm jacket are suitable for the ascent, also long trousers are good as the summit before dawn can be cold. The access route from the North West allows an early descent to be made from the summit in the morning shadow.
Patrick Chauka
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