More mysterious craters found in northern Russia [1]

Several months after a huge black hole was found in Yamal peninsula, Siberia, Russia, researchers say they have found more suspicious-looking craters and lakes and have called for 'urgent' investigation of the new phenomenon.

The Siberian Times writes [2] that until now, only three large craters were known about in northern Russia with several scientific sources speculating last year that heating from above the surface due to unusually warm climatic conditions, and from below, due to geological fault lines, led to a huge release of gas hydrates, so causing the formation of these craters in Arctic regions. 

"We know now of seven craters in the Arctic area," respected Moscow scientist Professor Vasily Bogoyavlensky said. "Five are directly on the Yamal peninsula, one in Yamal Autonomous district, and one is on the north of the Krasnoyarsk region, near the Taimyr peninsula."