On the ceiling of a limestone cave on the Indonesian island of Sulawesi, scientists have discovered artwork depicting three human-like figures interacting with a wild pig in what they have determined is the world's oldest-known confidently dated cave painting - created at least 51,200 years ago. The researchers used a new scientific approach to determine the minimum age of the newly disclosed painting inside the Leang Karampuang cave in the Maros-Pangkep region of South Sulawesi province by using a laser to date a type of crystal called calcium carbonate that formed naturally on top of the painting. "The method is a significant improvement over other methods and should revolutionize rock art dating worldwide," said Maxime Aubert, a specialist in archaeological science at Griffith Un...
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