Yellowstone National Park is a national park located primarily in the U.S. state of Wyoming, although it also extends into Montana and Idaho. It was the first National Park in the U.S. and is also widely held to be the first national park in the world. Madison Junction, which is located south of Mammoth Hot Springs, is best known as the place where Yellowstone was born. The park is known for its wildlife and its many geothermal features, especially Old Faithful Geyser, one of its most popular features. Native American Indians have lived in the Yellowstone region for at least 11,000 years. Yellowstone National Park spans an area of 3,468.4 square miles comprising lakes, canyons, rivers and mountain ranges. Yellowstone Lake is one of the largest high-elevation lakes in North America and is centered over the Yellowstone Caldera, the largest supervolcano on the continent. The Grand Prismatic Spring in Yellowstone National Park is the largest hot spring in the United States, and the third largest in the world. The West Thumb Geyser Basin, including Potts Basin to the north, is unique in that it is the largest geyser basin on the shores of Yellowstone Lake. We produce some of the best Yellowstone T-Shirts in the game, so check em out!.