25 Most Puzzling Ancient Artifacts

4. The Dropa Stones

The Dropa stones are a set of 716 stone disks discovered by a Chinese archaeologist and are said to be over 12,000 years old.

The disks are dotted with tiny hieroglyphic markings across the surface, which, when translated, tell an astonishing story.

They tell the tale of alien spaceships that crashed into the mountains, piloted by a group of people who called themselves the Dropa.

It was found that on spinning the disk on the turntable, an electronic and musical ‘hum’ was generated.

These stones were eventually handed over to Russia, and further studies have not been conducted since. Or perhaps they’ve been studied secretly? No one will ever know…