Mount Ol Doinyo Lengai is an active volcano mountain in the Gregory Rift Valley, located south of Lake Natron, within the Arusha region. Its Elevation is 2,980m above sea level. Ol Doinyo Lengai is a Maasai tribal language that means “The mountain of God”. It is the world’s only natrocarbonatite Volcano with unique lava with almost no silicon and its temperature is not as high as other lavas, approximately 500-600 degrees Celsius. The natrocarbonatite lava looks like fluid black oil and it turns white when it comes in contact with the object full of moisture, most of the time this whitening happens during the rainy season and that is the reason that if you look from afar at the top of the mountain it looks like a snowcapped mountain, but it is the white caused by this unique phenomenon. The last bigger eruption happened in 1966 with some smaller eruptions in 1983, 1933, 2007, and the most recent one at 2013. The Maasai community living around the mountain believes this Mountain is a sacred mountain, where they worship and doing their traditional ceremonies and sacrifices. Climbs are mostly planned during the midnight to reach the summit during the sunrise. From the summit, you can see a beautiful view of Lake Natron and Gregory Rift Valley.
Although it is a day hike, don’t underestimate this hike as it is a challenging one because the Mountain is quite steep and the ground there is unstable.