Oh wow, I’ve learned something amazing from, this thread – there exists a theory that states cave paintings with multiple heads or legs appeared animated when viewed with flickering firelight.
“Lascaux is the cave with the greatest number of cases of split-action movement by superimposition of successive images. Some 20 animals, principally horses, have the head, legs or tail multiplied. When the paintings are viewed by flickering torchlight, the animated effect “achieves its full impact,” said Azéma.”
[video]http://www.youtube.com/watch?v=x8exsw6yKXw[/video]