During the 4th dynasty of the Pharaohs in Egypt, nearly 5000 years ago, a people emerged from the mists of pre-history to complete the most ambitious and spectacular undertaking ever attempted by mankind. An incredible feat characterized by ingenious design, resourceful technique, and above all, the labor of tens of thousands of men who contributed with their bare hands to creating these colossal tombs for their Pharaohs. We look at the construction of Khufu, which, tall as a 40 story building, is the largest pyramid in the Nile Valley.