Are you interested in destructive supervolcanoes and ferocious wildlife? If so, this collection is for you. The geological features of the park’s supervolcano are discussed along with wildlife including aquatic animals, bears, and wolves.
http://www.nps.gov/
What's on Your Line? - Bonus Feature
Yellowstone National Park: This video covers both native and invasive species of trout that are found in the waters at Yellowstone. The physical characteristics of each of the five species are covered in detail. Cutthroat trout are native and must be released if caught!