In 1938, an expedition led by archaeologist Dr. Chi Pu Tei into the Baian-Kara-Ula in China made an astonishing discovery. Nearby caves held traces of the ancient culture which once occupied them. Buried by the dusts of time, hundreds of stone disks lay scattered about the cave’s interior. Nothing too spectacular you may think, but the disks turned out to be eerily similar to phonograph records — nine inches in diameter, a circle cut into their centers and an obvious spiral groove. They are believed to be more than 10,000 years old. But the spiral, as it turns out, is composed of tiny hieroglyphics. When studied and translated, it was revealed that the discs tell the amazing story of spaceships that crashed into the mountains, piloted by people who called themselves the Dropa.