Paka is a complex multi-vent low volcano lying at 1697m above sea level and formed at around 582,000 years ago. It is dominated by a young central caldera formed at around 11,000 year ago at the summit, which is 1.5 km in diameter and rises between 600-700 m above the rift floor. The surface is rocky and rugged, covered by savannah woodland. Paka is composed of basalt, trachyte and pyroclastic deposits. The volcanic complex is dotted with a number of smaller satellite volcanic centres, which are linked to the main volcano by linear zones of basalt and trachyte cones and eruptive fissures. Geothermal surface manifestations such as fumaroles occur on various parts of the volcano.
It is a source of Kaolin clays used in body adornment during cultural rites and ceremonies. The site is also a traditionally managed grazing ground and there exist three traditional shrines for the Pokot Community. The geothermal potential of this site is 300MW and the test wells have been drilled.