Hell's Gate National Park which covers an area of 68.25 Sq Kms is situated in the environs of Lake Naivasha about 90 km from Nairobi. The park is situated 14 km after the turnoff from the old Nairobi-Naivasha highway. The park is characterized by diverse topography and geological scenery. It is famous for its natural geysers, eagle and vulture breeding grounds.
Scenic locations include Fisher's Tower, the Central Tower and the Njorowa gorge. Two extinct volcanoes: Olkaria and Hobley's are located here. Natural steam vents rise from fissures in the volcanic rock. Obsidian, a striking black glassy rock formed from cooled molten lava is a feature of this landscape.
The flora is mainly grasslands and shrub lands with the latter being dominated by LeIeshwa and several species of acacia. Large mammals found in the park include buffalo, eland, plains zebra, Grants and Thompson’s gazelles, reedbuck, impala, Coke's hartebeest Masai giraffe, lion, leopard, cheetah and spotted hyena. The gorge and cliffs are breeding sites for several species of raptors and swifts. 103 species of birds have been recorded in the park. The Olkaria Geothermal Station is located inside the park.