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Yellowstone national park


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Yellowstone national park

  1. 1.  World's First National Park  2,219,789 acres  Based in 1872  located primarily in the U.S. state of Wyoming, although it also extends into Montana and Idaho
  2. 2.  The Yellowstone Caldera is the largest volcanic system in North America. It has been termed a "supervolcano" because the caldera was formed by exceptionally large explosive eruptions. The magma chamber that lies under Yellowstone is estimated to be a single connected chamber, about 37 miles (60 km) long, 18 miles (29 km) wide, and 3 to 7 miles (5 to 12 km) deep
  3. 3. The caldera is considered an active volcano. It has erupted with tremendous force several times in the last two million years. Lava flows and rocks from volcanic eruptions cover most of the land area of Yellowstone
  4. 4. Calderas - a large volcanic crater, typically one formed by a major eruption leading to the collapse of the mouth of the volcano.
  5. 5.  Falls consist of two major waterfalls on the Yellowstone River. As the Yellowstone river flows north from Yellowstone Lake, it leaves the Hayden Valley and plunges first over Upper Yellowstone Falls and then a quarter mile (400 m) downstream over Lower Yellowstone Falls, at which point it then enters the Grand Canyon of the Yellowstone, which is up to 1,000 feet (304 m) deep.
  6. 6.  The most famous geyser in the park, and perhaps the world, is Old Faithful Geyser.  A study that was completed in 2011 found that at least 1283 geysers have erupted in Yellowstone.  Of these, an average of 465 are active in a given year.
  7. 7. Old Faithful Geyser erupts approximately every 91 minutes.
  8. 8.  Yellowstone Lake is the largest lake in north america.  The lake is 2,357 m above sea level and covers 350 km2 with 180 km of shoreline. While the average depth of the lake is 42 m, its greatest depth is at least 120 m.