Search for Hidden Chambers on the Giza Plateau

Have you ever seen just one Sphinx in later Egypt that didn't have another? Not only did the ancient Egyptians mention a second Sphinx, but so did the Greeks, Romans, and Muslims. It was destroyed between 1000-1200 ad.

At the entrance to buildings and temples there are two Sphinxes, side by side, but on the avenue or approach to the temple they are facing each other. Sometimes they may have as much as 100 or so facing each other in the avenue. The Nile is Egypt's avenue between North and South. All of the writings about the two Sphinxes say that they were facing each other. The second one, by the way, was partly destroyed during a high Nile flood, and then completely destroyed by ensuing Moslems carting it off to rebuild their villages.
It was, as I recall, made out of mudbrick and faced with stone. It makes sense that the stone would disappear around 1200 ad, Cairo had a large earthquake and the people used facing stones from the Great Pyramid to rebuild part of the town and would also use the ones at the 2nd Sphinx. That would leave the mudbrick to deteriorate to the weather, and the Nile gradually moved east away from the pyramids and may have engulfed and erased the 2nd Sphinx.