On March 1, 1872 President Ulysses S. Grant signed into existence the world"s first national park, Yellowstone National Park. The 2.2 million acres of wilderness is the only complete mid-latitude ecosystem left on the planet. It s the only remaining temperate ecosystem large enough to contain the entire collection of large predators and broad enough to contain their prey. Yellowstone National Park is home to the world s most amazing geysers and hot springs including Old Faithful and the largest volcano on the continent. Discover the mystery and wonder of Yellowstone through in-depth interviews with the park rangers. Enjoy the awe-inspiring beauty through aerial and ground tours of the first national park, Yellowstone.