Wow very cool--also check out Werner Herzog's documentary Cave of Forgotten Dreams for a fantastic look at the Chauvet cave in France. It's a typical Herzog documentary that dives into the cave and the emotions it creates with people rather than going over the rote history or facts about it. It's also shot in 3D and if you have the hardware to see it in that format it is absolutely worth it! The cave drawings twist and bend around the walls so seeing it in 3D is a very rare instance where the experience is vastly improved by the technology. You can still see the normal version on Netflix streaming in the US though: http://www.netflix.com/WiMovie/70145740?trkid=13752289