Painted 600 and 700 years ago is quite frightening fact to be more specific :) Is there another Planet Earth ? Are they visiting us just to see how fucked up and late we are comparing to them ? Are they look like us ? Did someone already talked to them ? :D Ahahahahhahah endless topic and no proof, but one and only fact will remain forever:
Truth is out there.

P.S. Nice cuffs though ;)