According to Daily Mail, the mysterious death hole first appeared in Russia in 2014, raising speculation about a missile test, or alien creation.
Reindeer and dogs run in panic when a land suddenly explodes like a volcano, leaving a giant hole 50 meters deep.
More than 7,000 methane gas bubbles found in Siberia underground can explode at any time, creating giant craters.
According to the Siberian Times, some people have heard a loud explosion, echoing 100km away, emanating from the giant crater on Russia's desolate Siberian peninsula of Yamal.
Scientists have discovered four giant craters in the region of the desolate Yamal Peninsula of Siberia.
The giant crater in Russia's Siberia region, discovered last year and unknown cause of formation, is up to 60 m deep and can accommodate a 25-storey building.
The surface of the earth heaving due to methane leakage by global warming is the latest phenomenon recorded by scientists.