A quarter of a century ago, researchers Robert Schoch and Robert Bauval were at the centre of two controversial debates in Egyptology:
Schoch, with his geological redating of the Great Sphinx to a period earlier than its supposed builder, the Pharaoh Khafre; and Bauval, with his 'Orion Correlation Theory' that suggested the three famous pyramids of Giza were laid out to mimic the stars in the 'belt' of the constellation Orion.
Now, in 2017, Schoch and Bauval have teamed up again to revisit the Sphinx debate.