200 metres wide thermocirque seen weeks after scientists find funnel in the Yamal peninsula, caused by build up of methane.
Cops in the far north of Siberia 'to be issued with reindeer instead of police cars'.
Blocks of soil and ice thrown hundreds of metres from epicentre of the funnel at the Yamal peninsula.
Scientists say a 'fountain of gas' poured from jelly-like trembling earth in tundra on Belyy Island in northern Siberia.
Forests on the march thanks to global warming, says new research by Krasnoyarsk Science Centre.
Pipes are built over bulging and unstable Arctic pingos prone to violent eruptions caused by 'thawing methane gas', as seen twice on the Yamal peninsula this year.
Company’s bulldozer was in such rush to dismantle pipes after being filmed by ecologists that it crashed a police car.
His cries woke other participants, and one shot the bear.
Three man team probing the discovery is now 'missing in tundra', say Emergency Ministry officials.