Ikoo valley which is about 20Km long forms an approximately 300M deep V-shaped gorge at its western end which is widened further by the Ikoo River flowing along with it. The Ikoo valley provides a vantage point for photographic opportunities of the beautiful Mwingi scenery. From this point, it is possible to spectacular shots of the undulating hills beyond. Ikoo valley is believed to have been formed during the Mozambique belt metamorphism in late Proterozoic but there is evidence to suggest it was reactivated at least once during Pleistocene when rejuvenation of the main East African Rift System in Kenya occurred. The valley was used as a natural fortress by Kamba archers to repel the spear-wielding Maasai warriors.