|Red ochre cave painting||Vallon-Pont-d'Arc, France 15,000-18,000 BC|
This page has some paleolithic cave paintings I originally put on the web years ago, just because I liked them.
I'm sorry that, aside from the file names of the images, I don't know where these are from or where I found them on the web.
(To read the file names, from the View menu of your browser, choose "Source".)
If you want to buy some great (coffee table) books on cave paintings, I recommend these:
The Cave Painters: Probing the Mysteries of the World's First Artists
Lascaux: Movement, Space and Time