美国景点英文介绍ppt课件.ppt

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1、The Yellowstone Park Yellowstone National Park, established by the U.S. Congress and signed into law by President Ulysses S. Grant on March 1, 1872, is a national park located primarily in the U.S. state of Wyoming, although it also extends into Montana and Idaho. Yellowstone, widely held to be the

2、first national park in the world, is known for its wildlife and its many geothermal features, especially Old Faithful Geyser, one of the most popular features in the park. Yellowstone National Park spans an area of 3,468.4 square miles (8,983 km2), comprising lakes, canyons, rivers and mountain rang

3、es. Yellowstone Lake is one of the largest high-altitude lakes in North America and is centered over the Yellowstone Caldera, the largest supervolcano on the continent. The caldera is considered an active volcano. It has erupted with tremendous force several times in the last two million years. Half

4、 of the worlds geothermal features are in Yellowstone, fueled by this ongoing volcanism. Lava flows and rocks from volcanic eruptions cover most of the land area of Yellowstone. Grand Canyon The Grand Canyon is located in the northwest of the State of Arizona, formed by the Colorado River after mill

5、ions of years of erosion, colorful and steep cliffs. In 1979 Grand Canyon was chosen in the World HeritageGrand Canyon Skywalk known as the eighth wonder of the world. Visitors standing in the Grand Canyon Skywalk , you can enjoy a 720 degree angle of the Grand Canyon spectacle. Carved into a corner of the Arizona plains, the great roaring river, towering rock formations and breathtaking vastness of the Grand Canyon serve as a monument to the bold and enduring spirit of America. END