Scientists find world's oldest known cave art hiding in plain sight

In an Indonesian cave system known for its prehistoric art, the oldest cave art yet found was hiding in plain sight. In a cave full of paintings that were well studied over the years, a faint hand stencil on the ceiling had been overlooked. A new chemical **** ysis of the stencil reveals that it dates back at least 67,800 years, an astonishing 15,000 years older than the next-oldest cave art found on the same island, Sulawesi. A nearby stencil dated to about 60,900 years ago.
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