Was Noah's Flood a symbol for real people who were driven from a real homeland by a real flood? In an extraordinary geological detective story, two of the world's greatest earth scientists travel to the Black Sea, to reveal evidence of a mighty torrent that poured through the Bosphorus with the power of over four hundred Niagara Falls. Did this catastrophic event, only 7,500 years ago, become the stuff of ancient storytelling and the origin of the Biblical Flood? Follows the work of geologists Bill Ryan and Walter Pitman, who for twenty five years have been investigating evidence for the location of the biblical flood and Noah's Ark.