This is one of the fresh water lakes in the Great Rift valley. It provides sanctuary to hippopotamus and crocodile and it is a birder’s paradise. Many of the species here are unique to the area. The area has two major ornithological attractions, the escapement west of Kampi ya Samaki which is the home of Verreaux eagle, bristle-crowned starlings and Hemp Ricks hornbill, and the Gibraltar Island in the centre of the lake, an extinct volcano rising 50 meters above the lake. It has deposits of sulphur and hot water springs.