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Researchers are baffled about an 80-meter-wide hole recently discovered in a remote part of Siberia called Yamal.

Researchers are yet to explain the reason behind the appearance of the hole. A scientific team traveling to the site Wednesday plans to take soil, air and water samples, reported the Siberian Times.

According to Discovery News, the massive hole resembles a deep sinkhole -- it's not clear how deep yet -- but a ring of soil around the edge appears to have been thrown outside of the crater.

It is speculated that an underground gas explosion or a meteorite hit caused the hole.

Other experts said global warming, which is causing permafrost melting in Siberia could have released gas trapped in the ice.

"We can definitely say that it is not a meteorite," added a spokesman from Russia's Emergencies Ministry, according to Siberian Times.