He’s got the brains of a caveman. A dim-witted tourist dumped water on ancient cave paintings to snap better photos for social media — and is now under investigation after posting the shots of the ...

Prototype of painting of the facsimile of the Chauvet cave, which contains some of the earliest known cave paintings Arc, in Vallon-Pont-d'Arc. Jeff Pachoud/AFP via Getty Images Prehistoric cave ...