What Scientists Keep Finding Beneath Sydney Harbour Has Shocked the Entire World

Sydney Harbour is one of the most photographed waterways on Earth, and almost nobody who sails past it knows what is actually sitting along its foreshore. A freshwater stream that decided where the entire colony was built, now sealed in convict-cut tunnels beneath the CBD. Rock engravings of kangaroos, whales, and boomerangs sitting metres from walking tracks tourists use every day. An engraving so strange it sparked a century-long argument over who actually carved it. This is what is still there, beneath one of the most famous harbours in the world.

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