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Yellowstone National Park is a park located in the northwest of the state of Wyoming and also occupies a small area of the states of Idaho and Montana, the park occupies a large area of the Rocky Mountains. The name is taken from the sulphur-containing volcanic formations that characterise the park. The park is famous for its numerous geysers and hot springs. Earthquakes often occur in the park, at least one occurring every year. Yellowstone National Park was the first park to be established in 1872 and is visited by about 4,000,000 people each year.
Yellowstone National Park was the first park to be opened, its purpose being to preserve the unique landscapes created by the volcanic layers in the area. The park is also home to the Lower Falls, which are twice as high as Niagara Falls.
Yellowstone's most characteristic animal is the American bison. When it was first established there were less than 40 of this species left in the wild, but today the situation has improved and the population is around 4,000. Yellowstone National Park is also famous for the North American grey wolf, initially a dangerous animal to kill, today one of the symbols of the United States of America. Also important is the presence of grizzly bears and wapiti.
Yellowstone National Park was declared a UNESCO World Heritage Site in 1978.
In Yellowstone National Park there are many things to visit: The geysers including Old Faithful, the most famous that erupts every thirty minutes. You can also take tours to observe the local wildlife with experienced guides.