Yellowstone National Park

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Yellowstone National Park Park in nw Wyoming and reaching into Montana and Idaho, USA. Established in 1872, it is the oldest and one of the largest US national parks. Formed by volcanic activity, the park contains c.10,000 hot springs (including the giant Hot Springs) and 200 geysers (the most famous of which is "Old Faithful"). Other scenic attractions include Yellowstone River and the petrified forests. It is one of the world's greatest wildlife sanctuaries. In 1988 large-scale forest fires devastated much of the park. Area: 900,000ha (2.22 million acres).

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