On a far flung peninsula halfway up the coast of Western Australia are strange piles of cubic boulders that look like rusty refrigerators and boxes. Decorating their flat faces are more than one million rock carvings, some believed to be as much as . Environmentalists, scientists and archaeologists are campaigning to protect Australia’s oldest rock art from emissions [Credit: Ken Mulvaney]The petroglyphs at the Burrup Peninsula, also...

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