On the edge of the Giza Plateau, a team of archaeologists is uncovering a giant pyramid. As they excavate deep into the pyramid chambers, evidence shows this is the lost fourth pyramid of Giza. Its construction five thousand years ago had been a race against time. In seven short years between gaining power and his death, the aging pharaoh Radjedef had been determined to exceed the achievements of his hated father, the great Khufu, the most powerful pharaoh Egypt ever knew. Radjedef would stamp his supremacy in this world and the next by erecting the highest pyramid ever built, towering some 60 feet above Khufu's Great Pyramid of Giza. Over the next five millennia Radjedef's pyramid was forgotten and almost buried beneath the encroaching desert sands on a remote edge of the Giza plateau, and its significance to the three great pyramids was lost. Today, the top is missing because parts of it had been removed and recycled over the millenia to build old Cairo; it was more vulnerable to man's destruction than the other three because of its more remote location. The sand had reclaimed some of the lower parts of the pyramid as well. For these reasons, archaeologists and Egyptologists did not make the connection with the pyramids at Giza until recently. Today, it's only with positive re-identification that American and English Egyptologists, including Michel Vallogia of Geneva University, Joanne Rowlands of Oxford University, and led by the Head of Egypt's Supreme Council of Antiquities, Dr Zahi Hawass, have rediscovered the fourth and greatest of the pyramids. The History Channel will have exclusive rights to the excavation itself, the final positive identification and all the scientific revelations that are being found about it. By tunnelling under the fourth pyramid and using advanced technology, including ground-penetrating radar, the experts will lay bare the structure of Radjedef's pyramid, identify its layout, and establish the individual chambers. Themoreless