Egypt: What Lies Beneath

The Pyramids, the Sphinx and the tombs of the Pharaohs are all fabulous monuments to Egypt's past. But according to one scientist, the astonishing antiquities already discovered are just a tiny percentage of what was left behind by the ancient Egyptians. For the first time, techniques used for BBC One's Egypt - What Lies Beneath will reveal an ancient Egypt never before imagined, let alone seen.