In a Canyon, In a Cavern

Tonight I saw Werner Herzog's documentary Cave of Forgotten Dreams, about the Cave of Chauvet-Pont-d'Arc, which contains the oldest known paintings, believed to be 33,000 years old. By good luck I was able to see it in 3D, which despite its flaws gives a much better sense of what these images look like -- it's like the difference between a globe and a Mercator projection that flattens the earth.