Locals in the far northern Russian region believe between 60,000-80,000 animals might have died of starvation over the past few months. The tragedy follows the formation of a thick layer of ice across major parts of the Yamal tundra.
The aim is to give warnings over seismic activity that could lead to the sudden formation of new craters, which could potentially damage key industrial infrastructure.
Scientists rush to site of latest tundra eruption - which formed a crater 50 metres deep - amid fears for homes and key industrial sites.
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