While there are some volcanoes, there are some volcanoes. And some of those volcanoes just happen to be super (and that's not the type that flies around with a red cape and a stylized S).

They're different from your explosively popular Mt. St. Helens, Mt. Rushmore, and Mt. Vesuvius because while these volcanoes really pack a mighty punch, we're talking about super volcanoes here. There exists some massive, and we mean, gigantic volcanoes that could explode so violently and so wide that it could change the climate of the earth! We're talking 2500 times more powerful than Mt. St. Helens.

Now if that's not enough to scare you (who wouldn't be scared with that warning?!), here's the clincher: it's closer to home than you think. Some of you might actually have had a relaxing picnic right on top of it - Yellowstone National Park. Volcanic activity has been going on under there for about two million years now. And on average, it erupts every 600,00 years - it's last eruption being 640,000 years ago. Is it overdue? Well, this doesn't automatically mean that there will be an explosion soon, but there have been reports of increased thermic and seismic activity in the area recently.

So what happens if it does blow? Well... aside from causing a mini-Ice Age for the planet, let this picture of the primary blast-area speak for itself: