Balanites aegyptiaca
The area of the sanctuary is notable for its red soils which have little organic matter. The general vegetation-type is "Acacia" savanna, the major trees being "A. drepanolobium" on black cotton soil, and "A. brevispica" and "A. horrida" on the slopes. There are also patches of "Balanites aegyptiaca", and several species of "Commiphora" and "Terminalia" at the lower altitudes. The higher parts of the hills were formerly covered with forest dominated by "Juniperus procera" and "Olea europaea cuspidata". Endemic species of birds found in this protected area include Stresemann's bushcrow and white-tailed swallow.