Lascaux Caves, a cave complex in southwestern #France, contain some of the most remarkable paleolithic cave paintings in the world, from at least 15,000 years ago. Description from pinterest.com. I searched for this on bing.com/images
Stone Age Art ~ Amazing page comparing Petroglyph and Pictographs styles found on different continents. While I don't romanticize such things, it struck me strongly when looking at World Heritage Sites that human beings in so many different parts of the world painted, carved, or in some way inscribed their humanity onto the walls of the earth.