Window on the past: Aboriginal rock art discovered in the Australian outback by archaeologists was made 28,000 years about, shows artistic interests and subjects haven't changed that much over the years.
Dramatic find: Bryce Barker from the University of Southern Queensland investigating the Aboriginal rock art in a cave in the Australian outback which features erotic drawings.
Fragment: A piece Aboriginal rock art on granite in a plastic bag that was tested and found to have been made 28,000 years ago, making it the oldest in Australia and among the oldest in the world.