Yellowstone National Park is home to more mammal species than any other place in the US, including bears, lynxes, elk, moose, wolves, and foxes.
Yellowstone is a supervolcano formed by the largest eruption on Earth, resulting in a caldera and geothermal hotspots.
The Yellowstone Caldera eruption could have devastating effects around the world, including three feet of volcanic ash, lava flows, and sulfur aerosols. Earthquakes would be felt for weeks or months before any explosion.