The Cochno Stone

Archeologists in Scotland excavated this 5,000 year old stone slab, covered in swirls and geometric patterns. Measuring 43 feet by 26 feet, these same decorations have been found in countless prehistoric locations all over the world.

Except no one knows what they mean and who put them there. Even sadder, is that the stone was photographed and reburied to protect it from vandals. The exact location is not known to the public.