Modern dissenting hypotheses
When did Pharoah Khufu rule in Egypt?
Great Sphinx of Giza
Rainer Stadelmann, former director of the German Archaeological Institute in Cairo, examined the distinct iconography of the "nemes" (headdress) and the now-detached beard of the Sphinx and concluded that the style is more indicative of the Pharaoh Khufu (2589–2566 BC), builder of the Great Pyramid of Giza and Khafra's father. He supports this by suggesting that Khafra's Causeway was built to conform to a pre-existing structure, which, he concludes, given its location, could only have been the Sphinx. Colin Reader, an English geologist who independently conducted a more recent survey of the enclosure, agrees that the various quarries on the site have been excavated around the Causeway. Because these quarries are known to have been used by Khufu, Reader concludes that the Causeway (and the temples on either end thereof) must predate Khufu, thereby casting doubt on the conventional Egyptian chronology. In 2004, Vassil Dobrev of the Institut Français d'Archéologie Orientale in Cairo announced that he had uncovered new evidence that the Great Sphinx may have been the work of the little-known Pharaoh Djedefre (2528–2520 BC), Khafra's half brother and a son of Khufu. Dobrev suggests that Djedefre built the Sphinx in the image of his father Khufu, identifying him with the sun god Ra in order to restore respect for their dynasty. Dobrev also notes, like Stadelmann and others, that the causeway connecting Khafre's pyramid to the temples was built around the Sphinx suggesting it was already in existence at the time.