Nearly all students of the subject believe that subterranean chambers exist beneath the Great Pyramid. Robert Ballard writes: "The priests of the Pyramids of Lake Mœris had their vast subterranean residences. It appears to me more than probable that those of Gizeh were similarly provided. And I may go further:--Out of these very caverns may have been excavated the limestone of which the Pyramids were built. * * * In the bowels of the limestone ridge on which