Answer:
Yellowstone National Park is a volcano. It doesn't look like one because it's so massive, the crater is only a few meters higher than the surrounding area. The crater is 34 miles wide by 45 miles long, for a total area of about 1,530 square miles, and when it erupts, and erupt it will, the explosion will destroy a large part of the Western United States. Ash will fall 5 to 10 inches deep in Ohio, and the entire world will be covered in a cloud of ash that plunges the world into a volcanic winter.