It's possible that low oxygen levels in caves produced hallucinations – but that doesn't explain the majority of prehistoric art.
Some 17,000 years ago, Aboriginal artists often depicted kangaroos, fish, birds, reptiles, echidnas and plants — especially yams.
A recent cave art discovery in remote Indonesia is changing our understanding of the beginnings of art and the emergence of religious-like thinking in the early human story.
The cave paintings in Borneo show people and animals and are now thought to be the world's oldest example of figurative art.
Ancient bone and teeth ornaments found in an Indonesian cave advance our knowledge of the culture and traditions of some of the earliest people in our region.
DNA analysis suggests that a newly discovered species of bison roamed Europe some 17,000 years ago - as prehistoric cave artists were trying to tell us all along.