Yellowstone National Park is America's first national park, established in 1872. It is located in Wyoming, Montana and Idaho and contains half of the world's geothermal features, including over 300 geysers that make up two-thirds of the world's total. The park also contains hot springs, mudpots, fumaroles and unique hydrothermal areas like Mammoth Hot Springs. Yellowstone is home to a variety of wildlife such as grizzly bears, wolves, bison and elk and has a long human history dating back over 11,000 years.