Oldoinyo Lengai

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An Active Volcano in the Heart of the Wilderness

Casting its shadow over Lake Natron, this active volcano lies in one of the most beautiful and rural areas of Tanzania.

This mountain is sacred to the Masaai tribe; They named it Oldoinyo Lengai, meaning “Mountain of God”, as they believe it is the home of God.

It is also the only active sodium carbonate volcano in the world. It erupts every 3 years so you might be lucky to see smoke billowing from its peak or even walk across a smoky layer of new ground. A once in a lifetime opportunity, for sure.

The climb to the top is a 4-day journey. The climb is steep but exhilarating. Your efforts will be rewarded on your final day when you watch the day break over Tanzania. From the peak of Oldoinyo Lengai, you will see the sunrise over Mount Meru in the distance and perhaps even mount Kilimanjaro at the very edge of this beautiful country.

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Oldoinyo Lengai Highlights

Active Volcano

Oldoinyo Lengai is the only active volcano on Earth that erupts natrocarbonatite lava. All other active volcanoes emit silica-rich basalts.

The ash from these eruptions also creates an environment unlike any other volcanic landscape in the world!

A 'Toy Volcano'

Unlike other active volcanoes, this unique monolith is regarded as benign, with small cones within the volcano emitting harmless puffs of smoke, creating a beautiful and majestic vision for explorers to witness.


Gregory Rift, south of Lake Natron in the Arusha region of Tanzania.


3,188 m

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January 2021
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January 2021
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I did speed ascent and descent on Mount Kilimanjaro in 15 hours and 20 munites.

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July 2020
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My first experience of the beautiful Serengeti was with Mauli Tours the best travel and safari

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January 2021
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Hands down the best experience I have ever had or could even imagine having.

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Let us plan the trip of a lifetime for you. We know that not all set itineraries suit your needs and we believe you shouldn't have to settle for less. We offer bespoke itineraries, which we can shape into exactly what you need.

For those of you interested in making your safari extra special there are a number of add-ons that you can enhance your trip with: balloon safaris, horse riding safaris, cultural tours and walking safaris are all available.
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