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The huge 100ft fissure hissing steam on in Grand Teton National Park in Wyoming located six miles from Yellowstone and about 60 miles from the Supervolcano.

Park officials have closed off two areas of the park called Inspection Point and Hidden Falls citing fears for people’s safety.

Should the monster erupt, blistering lava could swallow Wyoming, Montana and Idaho due to it being located on the border of the US three states.

This would devastate the homes of millions of people and put their lives at risk.

And the video has forced experts to play down fears, saying it was not related to the Yellowstone super-volcano.