Lengai

Ol Doinyo Lengai, commonly called Lengai, is an active volcano in northern Tanzania, part of the East African Rift system. It rises above the Lake Natron basin and is situated near the border of Kenya. The mountain reaches about 2,600 meters above sea level and forms a prominent cone in the arid landscape.

Lengai is renowned for being the world's only currently active volcano that erupts natrocarbonatite lava. This rare carbonate lava erupts at relatively low temperatures and often effuses as pale to white lava flows, giving the volcano a distinctive appearance compared with other African volcanoes.

Eruptions at Ol Doinyo Lengai have been recorded since the 19th century and have continued into the present day, though the activity is typically intermittent and is mainly effusive rather than very explosive. The lava flows and ash emissions have sometimes disrupted nearby areas and trails.

The Maasai name for the mountain translates as "Mountain of God," reflecting its sacred status in local tradition. The region around Lake Natron hosts a notable ecosystem, including migratory birds and a famous colony of Lesser Flamingos at times.

Climbing Lengai is a challenging, remote trek that typically requires a local guide. Most ascent routes begin near Lake Natron and are best attempted during the dry season; visitors should be mindful of volcanic activity, rugged terrain, and the need for proper permission and safety precautions.