A nuclear meltdown? Zombies? Biological warfare run amuck? It won’t necessarily require a manmade threat to bring humankind down to its knees: a more natural apocalypse is just as possible and it’s right here in the United States. If you’ve visited one of the country’s most popular and famous national parks recently, you might have been walking on a ticking time-bomb. We’re talking about the Yellowstone volcano, or to be more accurate, the “supervolcano.”

If the menacing supervolcano under Yellowstone National Park exploded, it would take a huge chunk of the United States with it. And it wouldn’t just be the area around Yellowstone that would be affected. From East Coast to West, the effects of the Yellowstone volcano eruption would be felt. After 600,000 years, some say this thing is overdue for an eruption. Are they right? Learn the truth, and SHARE this apocalyptic reality with your friends!