Its Destructive Path!

What is a supervolcano?

A supervolcano is any volcano capable of producing a volcanic eruption with a volume greater than 1,000 km3 (240 cu mi). A supervolcano's blast is thousands of times larger than a normal volcanic eruption.

Yellowstone Supervolcano

The Yellowstone Supervolcano is located in Wyoming. The magma chamber is huge, reaching depths of 1 to 9 miles. With an average length of 55 miles and average width of 20 miles its potential as a ‘continent killer’ is obvious. The Yellowstone Supervolcano erupts once every 600,000 years, but it last erupted 640,000 years ago. This means that the volcano can erupt on any given day. Scientists predict an eruption by Yellowstone would cover over 1,000 miles in a 10-foot deep layer of ash.
FYI: Yellowstone's Super Volcano - Discovery Channel Podcast
Yellowstone Caldera : The Biggest Volcanic Eruption Ever Awaits Mankind
Yellowstone Supervolcano Ground Raises Ten Inches