Missionaries turn dry, rocky Kerio Valley into food heaven

When African Inland Mission (AIM) preacher Bill Retie and his wife Rosemary set foot on the dry and severely eroded Kerio Valley in Elgeyo Marakwet County, it never dawned on them they would leave behind an indelible mark of farming success decades later.

Upon pitching camp in one of the highland regions of the North Rift to spread the gospel more than three decades ago, the missionaries also saw the need to introduce locals to agriculture.