Answer:
Firehole, is the right answer.
Explanation:
With its location in Wyoming and small parts of Montana and Idaho, the Yellowstone National Park is the national park of the United States of America. This national park was founded by the Congress and signed into law by the then President of the United States, Ulysses S. Grant on 1st March 1872. It has been regarded as the first national park of not just the United States but also the World. The Yellowstone National Park is well known for its wildlife and its many geothermal characteristics, particularly Old Faithful geyser.