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The map reveals some of the largest fjords or ice cut channels on Earth,
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The belly of Antarctica has given up a little more of its mystery. Survey data taken across a great swathe of the east of the white continent has allowed scientists to map the shape of the bedrock buried deep under the ice. It reveals in new detail a huge trough hundreds of kilometres long that is cut by fjord-like features. Researchers tell Nature magazine that this hidden landscape was probably moulded by the action of glaciers more than 14 million years ago. This was a time when Antarctica was only part way through acquiring the extensive ice covering we know today.