However, the real surprise revealed by Bauval’s astronomical calculations was this: despite the fact that some aspects of the Great Pyramid did relate astronomically to the Pyramid Age, the Giza monuments as a whole were so arranged as to provide a picture of the skies (which alter their appearance down the ages as a result of precession of the equinoxes) not as they had looked in the Fourth Dynasty around 2500 BC, but as they had looked – and only as they had looked – around the year 10,450 BC.8
