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Field notes

Ol Doinyo Lengai

19 September 2026Travel, News, Wildlife

Ol Doinyo Lengai is "Mountain of God" in the Maasai language. The Mountain is an active volcano located in the Gregory Rift, south of Lake Natron within the πŸ“Arusha Region, Northern Tanzania, East Africa. β›° It rises to an elevation of 9,442 feet (2,878 meters) and is one of the many volcanoes situated along with the East African Rift System.

Mount Lengai, Contains basalts rich in sodium and potassium, and is so alkaline that its lavas resemble washing soda. πŸŒ‹ The volcano has more than one active center and most of the recent eruptions were from its northern crater. Subsidiary cones extend out from the center and down its sides. The fertile lower levels of the Ol Doinyo Lengai are planted in vineyards and citrus.

The steep higher slopes are covered with oak, birch, and beech. Above 6,500 feet a few plants are found scattered among ashes, sand, and fragments of lava and slag. . . .

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