It is known as the location of skull 1470, discovered by Bernard Ngeneo in 1972, reconstructed by Meave Leakey, later reconstructed and named "Homo habilis" by Richard Leakey, as possibly the first of the genus "Homo", and finally "Homo rudolfensis". Richard Leakey found it 45 m below the 1.89 my KBS tuff; thus, it is older than that date, but is conventionally dated to it.