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An environmental organisation wants to turn mysterious holes into a tourist attraction

A couple of years ago the ground gave way in the village of Hellikon, not far from the German border. Mysterious steaming holes appeared in the middle of a field. Now Pro Natura wants to buy the holes and build a geological site around them that will be accessible to visitors. (SF/swissinfo.ch)

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SWI swissinfo.ch - a branch of Swiss Broadcasting Corporation SRG SSR

SWI swissinfo.ch - a branch of Swiss Broadcasting Corporation SRG SSR