2,162 sq km, 770km southwest of Addis Ababa, on east bank of Omo river. 450-2,528m. Highest point is Mount Mago.

Mainly grass savannah, some forested areas around rivers.

Conservation area for plains animals, 56 species of mammals: buffalo, giraffe, elephant, lelwel hartebeest, lion, cheetah, leopard, zebra, gerenuk, oryx.