Saucer

Seismic surveyor Rip Cantrell has made an exhilarating discovery - a flying saucer embedded in the Sahara sandstone. Buried for eons, it's not the invention of modern man. Computer-equipped, it can't belong to ancient man. Rip's betting his life on the only alternative. If the ship's memory bank holds the proof he needs, it's going to rock civilization, and make Rip a very famous man.