Cave of forgotten dreams is a great documentary by Werner Herzog:
http://www.science.fulldocumentary.com/default.asp?action=listing&id=1024
In 1994, a group of scientists discovered a cave in Southern France perfectly preserved for over 20,000 years and containing the earliest known human paintings.
Knowing the cultural significance that the Chauvet Cave holds, the French government immediately cut-off all access to it, save a few archaeologists and paleontologists. But documentary filmmaker, Werner Herzog, has been given limited access, and now we get to go inside examining beautiful artwork created by our ancient ancestors around 32,000 years ago. almost twice as old as any previous discovery.
Cave of Forgotten Dreams follows an exclusive expedition into the nearly inaccessible Chauvet Cave in France, home to the most ancient visual art known to have been created by man. It’s an unforgettable cinematic experience that provides a unique glimpse of the pristine artwork dating back to human hands over 30,000 years ago.
Christian Bokhove 