Gateway to the Underworld

Gateway to the Underworld

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For as the permafrost melts, the world’s biggest “megaslump” is expanding rapidly. Already about a kilometre long and 90m deep, it is widening by up to 20m a year, making walking near its precipitous edges a dangerous pursuit.

But Batagaika crater, which first appeared about 25 years ago, is also a sign of the rate at which the world is warming – smaller ones have been appearing increasingly across the northern hemisphere.

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Gateway to the Underworld

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