Seismic activity around the Yellowstone National Park in Wyoming, US, is not uncommon, but the heaviest swarm in half a decade has people very concerned.

Since June 12, there has been over 1,400 tremors in the region, and experts state that the swarm could go on for another month.

The Yellowstone Caldera supervolcano last erupted 70,000 years ago but a spike in seismic activity around the national park has unsettled nerves.

If the Wyoming volcano were to erupt it would kill an estimated 87,000 people immediately and make two-thirds of the USA immediately uninhabitable. The as the large spew of ash into the atmosphere would block out sunlight and directly affect life beneath it creating a “nuclear winter” and threatening ALL life on earth.