For rock art to survive over the centuries, it needs to be located in caves of other sheltered places like this overhang in Australia.

Rock Art

Cave paintings on the island of Borneo showing animals and human hands have recently been dated back some 40,000 years, making them the oldest known example of figurative rock art in the world. (Details of the story can be found in various articles, including one here from the Australian Broadcasting Corporation.) Think for a moment about how long ago that…