Ol Doinyo Lengai, the name originated from maasi language which means “Mountain of God”  is an active volcano located in the Gregory Rift south of lake Natron within the Arusha Region of Tanzania. Part of the volcanic system of the East African Rift, it uniquely produces natrocarbonatite lava. The 1960 eruption of Ol Doinyo Lengai led to geological investigations that finally confirmed the view that Carbonatite rock is derived from magma. The Maasai people conduct prayers to God “Engai” whom the Maasai believe is the Creator of all things around this active volcanic mountain. Ol’donyo Lengai is the only active volcanic mountain in the world which produces dark brown lava during its eruption and this phenomenon attracts many geologists from all over the world who come for research activities.


Temperature of its lava as it emerges is only around 510 °C (950 °F). A few older extinct carbonatite volcanoes are located nearby, including Homa Mountain.


  • Maasai culture tourism.
  • Local believes like Maasai conducting prayers in the mountainous area.
  • Hiking.
  • Cultural activity

Best Time To Visit

You can climb the Oldonyo Lengai Mountain the whole year round; only in the wet seasons (March to May, October to December) it is not advised to visit for climbing this mountain because the roads are flooded with rain water.


Inside The Area

  • Tented camp
Professional instructor Park Entrance
Transport Meals
Rescue & Camp Forest Fee  Accomodation
Daily Provision of treated/boiled water  Airport Tranfers
Alcohol & Cigarette Mineral Water
Discretionary Tipping Item of personal nature
Anything not mentioned above  Laundry


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