Yellowstone National Park or Yellowstone National Park - International Biosphere Reserve, a World Heritage Site by UNESCO, the world's first national park (founded March 1, 1872). In the US, in the territory of Wyoming, Montana and Idaho. The park is famous for numerous geysers and other geothermal sites, rich in wildlife, picturesque landscapes.
On the vast territory of the park there are lakes, rivers, canyons and caves. Yellowstone Lake, one of the largest alpine lake in North America, located in the center of the Yellowstone Caldera, the largest supervolcano on the continent. The caldera is considered dormant supervolcano; he erupted with tremendous force several times in the past two million years. Most of the park is covered with solidified lava; the park is one of five of the world geyser fields.