Lake Natron is a salt or soda lake in Arusha Region in Tanzania. It is in the Gregory Rift, which is the eastern branch of the East African Rift. The lake is within the Lake Natron Basin, a Ramsar Site wetland of international significance.
The lake is fed principally by the Southern Ewaso Ng'iro River, which rises in central Kenya, and by mineral-rich hot springs. It is quite shallow, less than three metres deep, and varies in width depending on its water level. The lake is a maximum of 57 kilometres long and 22 kilometres wide.
Coordinates -2°21'13.03" N 36°1'6.172" E