Edgar Cayce, charlatan. You know that no such chamber existed right, and that was made up? And that the claim was that it was found using remote viewing - in other words, closing your eyes and picturing things from far away? And that you can find this yarn being sold at Barnes and Noble on the SCIENCE rack? Hope this helps - Also - Then we have these people - That last one is especially convincing. Evidently, the secret chamber under the Sphinx looks exactly like the inside the Great Pyramid, in the parts accessible to tourists. Clever of the ancient Egyptians to do that, even more clever that the apocalypse gang got the underground all dried out. Life on other planets? Yes. Chambers under the Sphinx? Yeah. Not so much. Sorry.