Yellowstone Supervolcano: American Doomsday explores the inner workings of the Yellowstone caldera and the disaster that could happen. The Yellowstone National Park might look beautiful on the outside. Underneath the surface, however, lurks a threat to every living creature on this earth. Throughout the 80ish-minute documentary special, a number of experts will tell us what we may be in for by looking at the past. One volcanic expert takes us some 120 feet below the…"Yellowstone Supervolcano: American Doomsday"