Archaeologists working in Sinai have uncovered an ancient Egyptian city and military base dating back at least to the time of Pharaoh Thutmose II (1516-1504 B.C.). The site is believe to correspond to one of 11 major military bases detailed in inscriptions at the Karnak Temple in Luxor. A further 5 such bases remain to be discovered. Amazing what you can hide under all that sand. Further details here.