>> stephen: oh my god, even cavemen sent obscene tweets. please welcome werner herzog. (cheers and applause) >> stephen: whooo, whooo, good to see you, mr. herzog. >> thank you. >> stephen: now, sir, this movie is called cave of forgotten dreams. now explain to the people exactly what is this cave, and where is it? >> well, it's in the south of france. it was discovered about 16 years ago. and it turned out that it was the oldest, it contained the oldest paintings ever, ever discovered. >> stephen: how old are they opinions 32,000, maybe 35,000 years back in time. and of absolute incredible quality. >> stephen: how could a painting be 32,000 years old if the entire world is only