An aspect was, however, clarified: a spokesman oft he Yamal branch of Russia’s Emergencies Ministry said to the media that “we can definitely say that it is not a meteorite.” Some scientists have the impression of a mass of material that has burst out from below. Other experts say the most likely explanation is that it was created by an explosion of gas. Global warming has been blamed by some theorists supposing that the area begun releasing hydrocarbon gases previously trapped underneath the tundra . Scientist Chris Fogwill says it’s probably a geological phenomenon known as a collapsed pingo, or hydrolaccolith, based on a block of ice. Not at last, some voices claim that it was caused by a UFO. As a curiosity, the name of the region where the hole is located – “Yamal” – means “end of the world” in the local language and this determines an increase of the mystery. The expedition team includes two experts from the Centre for the Study of the Arctic and one from Cryosphere Institute of the Russian Academy of Sciences.