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Yellowstone National Park is a vast and stunning national park located primarily in the U.S. state of Wyoming, although it also extends into Montana and Idaho. It is known for its geothermal features, including the iconic Old Faithful geyser, as well as its diverse wildlife such as grizzly bears, wolves, and bison. The park encompasses a wide variety of ecosystems, from lush forests to expansive meadows and dramatic canyons. Yellowstone is considered the first national park in the world, established in 1872 to preserve its natural wonders for future generations to enjoy.