Oldoinyo Lengai

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Ol Doinyo Lengai, "Mountain of God" in the Maasai language, 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.

Ol Doinyo Lengai is unique among active volcanoes in that it produces natrocarbonatite lava, a unique occurrence of volcanic carbonatite. A few older extinct carbonatite volcanoes are located nearby, including Homa Mountain.

Oldoinyo Lengai Treking.

Oldoinyo Lengai” means “The Mountain of God” in the Maasai language. The summit of this strato-volcano is 2962 metres 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 kilometres away in Loliondo on the Kenyan border to the north west.

Recent Seismic Activity

Recent volcanic activity began on 12th July 2007 with daily tremors in Kenya and Tanzania, the strongest of which measured 6.0 on the Richter scale. The mountain finally erupted on September 4, 2007, sending a plume of ash and steam at least 18 kilometres downwind and covering the north and west flanks in fresh lava flows. The eruption continued intermittently into 2008, with a major outburst taking place on March 5 2008, and smaller eruptions on 8 and 17 April 2008; activity continued until late August 2008. A visit to the summit in September 2008 discovered lava emission from two vents in the floor of the new crater; by April 2009 this activity appeared to have ceased, but eruptions occurred again in October 2010.

Please see below the short recommended program for oldonyo Lengai trekking, This program can be customized and mixed with Wildlife Safaris to Seregeti-Ngorongoro-Lake Manyara and Tarangire National Park. Please contact us for more details. 

Day to Day Itinerary

Day 1:

Depart Arusha early in the morning and drive to Lake Natron Camp (the transfer is around 6hours). Here you will be able to freshen up then visit Ngare Sero Waterfalls which descend from the Nguruman Escarpment west of Lake Natron. After your tour of the waterfalls you will head back to the camp for dinner and overnight.

Day 2:

After breakfast you will be transferred to Lake Natron, an alkaline lake that serves as the principal breeding site for three-quarters of the world’s population of Lesser Flamingoes. After your tour of Lake Natron you will head back to the camp so as to get enough rest before your trek up the mountain at midnight.

Day 3:

Your climb will start at midnight and it will take around 5 to 6 hours whereby you will reach the summit in time to witness the amazing sunrise as it illuminates the Great Rift Valley. During your climb you will be escorted by an experienced Maasai guide. After exploring the peak you will head back down the mountain to the base where your driver will be waiting for you to take you back to the camp to rest and freshen up. You will then be transferred back to Arusha via Ngare Sero Maasai village where you will be able to visit the Maasai bomas and experience their ways of life.