About 70,000 years ago, there was a huge piece of land off the coast of Australia that could have supported around half a million people. This land connected modern-day Indonesia to Australia and was part of the North-West Australian Shelf. It used to be part of a bigger landmass called Sahul, which linked Australia, New Guinea, and Tasmania into one continent. Today, scientists are mapping this lost "Atlantis" to learn more about it. It's fascinating to think about this ancient world that once existed!

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