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Heard Island and McDonald Islands, Australia
Heard Island and McDonald Islands is one of the most mysterious places in the world. In fact, the only people known to have visited these islands are a few researchers. The most secret place in Australia, Heard Island and McDonald Islands are currently uninhabited.
Heard Island is a world heritage site in Antarctica. The island has no permanent inhabitants. The island is also known as Elephant Island because of the many Elephant Seals who migrate to the island in the winter months.
