Blocks of soil and ice thrown hundreds of metres from epicentre of the funnel at the Yamal peninsula.

Local reindeer herder witnessed the tundra explosion that led to birth of new hole in river.

Concern from scientists over potential danger to gas production facilities in region vital for energy supplies.

Startling new details emerge of the most mysterious of Siberia's newly created giant permafrost holes.

Reindeer herders find more craters in the far north in a deepening puzzle for scientists. 

Satellites show giant hole ringed by 20 'baby craters'.

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 rush to site of latest tundra eruption - which formed a crater 50 metres deep - amid fears for homes and key industrial sites.