Bombo Lumene is located on the ancient Kalahari sand dune system, forming the southern tip of the great Batéké Plateau, which stretches from the DRC to the Republic of the Congo and Gabon. The average elevation in Bombo Lumene is approximately 600 meters. It comprises 350,000 hectares of land characterized by open and wooded savannas and gallery forests typical of the Batéké Plateau landscape. The gallery forests are found along the reserve’s main rivers: the Bombo, Lumene, and Lufimi. The Bombo and Muti-mutiene Rivers form the western boundary, while the Lufimi River forms the eastern boundary. Between the Bombo and Lumene rivers lies the section of land originally designated as a reserve in 1976, and between the Lumene and Lufimi rivers lies the former hunting reserve established in 1968. The rivers flow from south to north and eventually empty into the mighty Congo River.