What an odd thing to claim and publish, and the wikipedia article is already updated with these spurious "findings". That qualifies as suspicious. The actual position taken by these "archeologists" from their paper about a "modern social history of prehistoric handaxes" is quite a reach.<p>The rock does not look like the flat head of any axe, nor does a "prehistoric stone tool" bear any meaning whatsoever in the context of the image. In fact the rock resembles fragments of meteorite. Perhaps all the supposed "ancient handaxes" are really from a more recent meteoric event. That would be quite a thrust against prehistorical man narratives made up by archeologists.<p>Oh, people really called these supposed axes "thunderstones" before the advent of modern archeology claimed they are tools of prehistoric man. Yet these "researchers" claim a painting proves that 15th century people already thought the rocks were ancient handaxes despite contrary evidence, in other words that what archeologists made up was already well know; so it must be true after all, how convenient. But that is tautological: provide a theory based on a painting and claim the painting is evidence the theory is correct.