The suggestion that the Giza pyramids were laid out to represent the stars of Orion's belt, with the position of the River Nile reflecting the Milky Way, was first put forward by the renowned author Robert Bauval in his bestselling book The Orion Mystery. In Before the Pyramids, Knight and Butler reveal that the British henges were arranged in the same formation--but much earlier. They also present irrefutable evidence that the astronomical calculations determining the layout of the pyramids could only have been made from the site of the henges in North Yorkshire. From this they can conclude...