There’s a live supervolcano underneath Yellowstone National Park — here’s what would happen if it erupted

*This video was originally published in May, 2016. What would happen if Yellowstone erupted? Yellowstone is a

*This video was originally published in May, 2016.

What would happen if Yellowstone erupted?

Yellowstone is a living, breathing supervolcano. In the last 2.1 million years the supervolcano has erupted three times.

Forming massive crater-like features called calderas. Scientists don’t know when, or if, Yellowstone will erupt again.

But if it did, the consequences could be catastrophic.

The biggest concern isn’t oozing lava, but deadly volcanic ash. The supervolcano would belch a giant umbrella cloud of ash into the sky.

The cloud could cover a region 500 miles wide, and would rain gray ash back to the ground up to four inches thick.

The ash would blanket crops in the Midwest, threatening agriculture.

Soon, rain would wash it into nearby streams and rivers where it could clump and clog.

But that’s just the beginning.

The eruption would likely spout sulfur dioxide gas into the atmosphere where it would trigger global climate cooling.

Experts estimate the cooling could last up to a decade, and jeopardize crops even further spurring widespread famine.

It wouldn’t be enough to wipe out humankind. But it would be enough to remind us that we are at the mercy of mother nature.

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Article There’s a live supervolcano underneath Yellowstone National Park — here’s what would happen if it erupted compiled by www.chron.com