In 1973, researchers from the University of Michigan conducted a survey in the Loboi area, north of Lake Bogoria (Lake Hannington) in west Kenya, north of Nairobi. The goal of the project was to record archaeological remains in the area. In 1965, Mary Leakey had noted the presence of stone tools and faunal remains in Loboi, and her son Richard Leakey, director of the National Museums of Kenya, suggested the area should be further studied.In addition to the intensive survey, the researchers excavated seven small test units at five sites and recovered archaeological materials.