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Euronews
Euronews
Joanna Bailey

Europe’s largest meteorite impact crater is pumping out methane and nobody knows why

New research in Sweden has uncovered perplexingly high methane emissions coming from the largest meteorite crater in Europe.

The Siljan Ring is a prehistoric impact structure in central Sweden that measures around 52 km in diameter. There are several lakes in the region, the largest of which is Siljan on the southwestern edge.

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