Legends from China tell of 716 mysterious stone discs, known as "The Dropa Stones".
Some believe the stones hold secrets about ancient contact with extraterrestrials.
Discovered in a cave in 1938, each 12" disc contains a double spiral of tiny hieroglyphs that are said to contain the historical record of an alien race called the Dropa that crash-landed in an isolated region of China 12,000 years ago.
The story of the Dropa Stones is an amazing tale filled with mystery, deceit, and conspiracy, and today, skeptics and true believers wage an ongoing battle over what they are, what they mean, and if they even exist at all.
Regardless, the Dropa Stones continue to consume the imaginations of scientists, journalists, historians, UFO buffs, and stargazers in general.