Ol Doinyo Lengai, standing at 2,890 meters, rises dramatically along the western edge of the Great Rift Valley, about 240 kilometers northwest of Arusha. Overlooking Lake Natron near the Kenyan border, this sacred peak—known to the Maasai as the “Mountain of God”—is Tanzania’s only active volcano.Climbing Ol Doinyo Lengai is a challenging yet rewarding experience. The ascent, typically begun in the early hours before dawn, takes roughly six hours and offers sweeping views of the Rift Valley and the volcanic landscapes of the Ngorongoro highlands. Due to its active status, climbs are suspended during periods of volcanic activity.

At the mountain’s base lies Lake Natron, a vital breeding ground for the endangered Lesser Flamingo. This soda lake supports about 75% of the world’s Lesser Flamingo population, making it one of the most crucial nesting sites for the species globally.

Lake Natron is located at the lowest point of the eastern arm of the Great Rift Valley and remains shallow, often less than three meters deep. The intense heat—mud temperatures can exceed 40°C—and the high alkalinity of the water create a protective environment where few predators can thrive, helping safeguard the flamingos’ breeding grounds.The surrounding landscape is often described as otherworldly—dry, stark, and hauntingly beautiful. Exploring the lake’s edges, nearby waterfalls, and remote streams offers an unforgettable adventure through one of Tanzania’s most unique and off-the-grid regions.