The 66 square kilometres (25 sq mi) reserve was created in 1983 and is managed by the Kenya Wildlife Service.

[2] The Elgeyo Escarpment rises more than 1,830 metres (6,000 ft) above the valley in places.

It has semi-tropical vegetation on the slopes, while the floor of the valley is covered by dry thorn bush.

[1] The most comfortable time of the year is in July and August when the rains have ended and the temperatures are not excessive.

[2] After the reserve was established there was an increase in the wildlife population, including elephants.