As America's first national park and one of its most important biosphere reserves, Yellowstone holds a unique place in our national consciousness — more than four million people visit the park each year. However, with its rich history, there are likely many facts you've probably never heard of, even if you consider yourself a park aficionado. Here are 10 fascinating Yellowstone National Park facts that will take your knowledge of America's favorite national park to the next level.
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