An archaeologist says he found the oldest piece of rock art in Australia and one of the oldest in the world: an Aboriginal work created 28,000 years ago in an Outback cave.

The dating of one of the thousands of images in the Northern Territory rock shelter known as Nawarla Gabarnmang will be published in the next edition of the Journal of Archaeological Science.

University of Southern Queensland archaeologist Bryce Barker said Monday that he found the rock in June last year but only recently had it dated at New Zealand's University of Waikato radiocarbon laboratory.

He said the rock art was made with charcoal, so radiocarbon dating could be used to determine its age. Most rock art is made with mineral paint, so its age cannot be accurately measured.

"It's the oldest unequivocally dated rock art in Australia" and among the oldest in the world, Barker said.

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Humans lived and survived even before 45,000 years. I think the historians should get together and do something about the history that we are learning in school today. The internet is a better source for learning than formal education.