The site is situated in Nyando District, Nyanza Province. The site was gazzetted in 1982. It is 78 acres in area. It is a Miocene site dating back to about 19 million years ago. There were a large variety of animals living there. The fossil hominoids collected from this site range from small to bigger apes. Eight species of hominoids have been identified. There is enough evidence that the proconsul africanus also lived at this site.