http://ngm.nationalgeographic.com/2015/01/first-artists/walter-text
Fascinating article in National Geographic about the origins of art and the first people that were its’ creators.
What I find most amazing, is that this art is as close to permanent as we are capable. In our current world, most of the art we create is fleeting, unable to survive only a few decades, but we are looking at art from the dawn of mankind.