Open grass plains with scattered acacia bush predominant. The western side has a highland dry forest and a permanent river with a riverine forest. In addition, there are stretches of broken bush country and deep, rocky valleys and gorges with scrub and long grass. Man-made dams have also added a further habitat, favourable to certain species of birds and other aquatic biota. The dams also attract water dependent herbivores during the dry season.
Large mammals are the park's main attraction.
Herbivores include, black rhino, buffalo, eland, Maasai giraffe, plain's zebra, wildebeest, coke's hartebeest, grant's and Thompson's gazelles, impala, waterbuck, bushbuck, and warthog. The carnivores are represented by lion, leopard, cheetah, hyaena, jackal civet and genet. The park has diverse birdlife with 400 species recorded. However all species are not always present and much depends on season. Northern migrants pass through the park primarily during late March through April.