Under the bubbling hot springs and geysers of Yellowstone National Park is a supervolcano. Most people don't know it's there. The caldera is so large that it can only be seen from a plane or satellite. It just could be overdue for an eruption, which...




![Limbus, Inc. [Anthology]](https://www.rulit.me/data/programs/images/limbus-inc-anthology_342042.jpg)




