William (Bill) Brown is a retired civil engineer who has earned the moniker "Gizatologist" as he has been working at the Giza Plateau for over two decades. By utilizing various ground penetrating scanning technologies, working with local experts and carrying out excavation projects, he has revealed countless chambers and tunnels around the Sphinx and Pyramids in his effort to locate the long lost Halls of Records described by Edgar Cayce. He has worked with the National Research Institute of Astronomy and Geophysics, as well as Cairo University and several international teams at Giza, and also at other sites in Egypt, including Hawara; the location of an extensive underground labyrinth complex. His work has been featured in the recent docu-series entitled, The Secret Underworld of Giza (Youtube). He is currently planning an excavation project at the site of a previously unknown buried temple complex connected by a tunnel directly to the Great Pyramid, and at a tomb connected directly to the Sphinx.