The Aberdares are part of Kenya’s central highlands, running roughly north south between Nairobi and Thomsons Falls with a range of almost 13,000 ft. The topography is diverse with deep ravines that give way to gentler valleys separated by steep hills and rocky outcrops. The park is an important water catchment area providing water to the Tana and Athi rivers and part of Central Rift and Northern drainage basins. The climate is wet and moist. The park is surrounded by a predominantly indigenous forest, whose management is under an MoU between KWS and the Forest Department.
Animal life is most abundant in the forest zone. Large mammals are represented by elephants, buffalo, bongo and black rhino among others. Carnivores include lion and leopard, whereas primates are represented by baboon, black and white colobus and sykes monkeys. The park is rich in bird life with over 250 species recorded. The Jackson’s Francolin is endemic