Gas bubbles from waters filling crater hole on Yamal peninsula two months after volcanic-style explosion in thawing permafrost.
Mysterious 'gigantic' hole in remote region spotted by helicopters over gas-rich Yamal peninsula.
Scientists say there is growing evidence that rising temperatures were catalyst for massive unexplained holes in ground.
Reindeer herders find more craters in the far north in a deepening puzzle for scientists.
Local reindeer herder witnessed the tundra explosion that led to birth of new hole in river.
Analysts say opening of LNG facility in Queensland with exports to China could affect Yamal as Pacific countries look to take on Russia in Asia.