A physical and intellectual journey, a worldwide exploration looking for the ancient ruins of a lost civilization, this video follows clues in ancient scriptures and mythlogy and in the scientific evidence of the flood that swept the Earth at the end of the last Ice Age. This video explores the question of early humans swept away by the catastrophe. Who were these populations - pre-civilised hunter-gatherers or more sophisticated peoples altogether? Some 6,000 or 7,000 years ago in Mesopotamia, civilisation has been with mankind for many millennia longer. Examines which coastal areas vanished beneath the sea as the ice melted at the end of the last Ice Age, a catastrophic inundation we find in the Flood myths of most of the world's traditional religions. Goes diving and finds, in some cases, incontrovertible ruins; in other cases the piles of stone might well be natural rock formations, but Hancock argues for their human origins.