FOUR Researchers want to unravel the truth: biologist Dr Martha Watkins, anthropologist Jim Trevor, and archaeologists Dr Paul Brando from California, US, and Professor Simiyu from Kenya.

TWO Extremist organisations want the truth buried forever: a religious sect and a terror organisation.

Deep in the caves of Sibiloi in Turkana, Kenya, is the answer that has evaded researchers for ages: Sibiloi holds secrets of the genesis of humanity.