A Map of Antarctica, if it were located in the North Pacific instead of at the South Pole. Source: Reddit User ApproxKnowledgeSitepic.twitter.com/tGYoabXwqp
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Isostatsy. The parts your map has flooded are pushed below sea level by immense mass of the ice atop of it. Scandinavia for example is experiencing post-glacial rebound, where it's quite noticeably rising from the Baltic Sea, after being freed of the cap it had in Ice Age.
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