The region borders Guéra Region to the north, Salamat Region to the east, the Central African Republic to the south, and Mandoul Region, Tandjilé Region and Chari-Baguirmi to the west. The region is largely flat savannah, with parts of the region protected as part of the Manda National Park. Lake Iro, a suspected impact crater, is located in the north-east.[2][3]