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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.
The oldest known rock art is in Spain, where hand stencils and red disks made by blowing paint on to the wall in El Castillo cave were at least 40,800 years old, according to scientists using a technique known as uranium-thorium dating.
What a 28,000-year-old piece of art looks like - thestar.com
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