Yellowstone National Park is current a calm landscape, but concealed beneath the surface is a supervolcano that brings destruction whenever it awakens. Scientists have been predicting it would take many centuries for Yellowstone to become an active volcano again, but now they’re cutting that time down to as little as a few decades. Over the last 2.1 million years, the Yellowstone Caldera has erupted three times, and geologists note that the majority of the park’s features like geysers and hot springs are thanks to the volcanic activity. The timeline for the volcano being active again is up for debate, but a study of Yellowstone Caldera in 2013 calmed some fears when it found the magma chamber under the park was about two and a half times larger
