Unlocking the secrets of the pyramids. For thousands of years the pyramids have stood, imposing and enigmatic, refusing to give up their secrets. In this thrilling book of scientific and historical detective work, the authors try to answer some of history's oldest questions... Why did the Egyptians really build pyramids? What lies inside the Great Pyramid's hidden chamber and what awesome secret, unseeen for 4500 years, could be concealed there? Bauval and Gilbert have spent over ten years investigating the mysteries of the pyramids. Their conclusions have aplit the academic establishment.