Hell's Gate National Park.

Hell's Gate National Park lies south of Lake Naivasha in Kenya, north west of Nairobi. It includes the Fischer's Tower; a craggy behemoth that stands at 25m, formed when semi-molten rock was forced through a fissure and solidified around 35 million years ago, Central Tower columns and Hell's Gate Gorge. The national park is also home to five geothermal power stations at Olkaria. Activities include; rock climbing, cycling and hiking.