The main feature is the Champagne Ride in the southeast, an ancient lava-terrace. The climate is hot, dry and semi-arid.
Buffalo Spring National Reserve
The Buffalo Springs National Reserve is south of the Samburu National Reserve, which lies on the other side of the Ewaso Ngiro river. It is named after an oasis of clear water at its western end. The reserve has an area of 131 Km2 and is at an altitude of between 850 metres and 1,230 metres above sea level. It is a gently rolling lowland plain of old lava flows and volcanic soils of olivine basalt.