| Snake River Plain |
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The Snake River Plain is a Geological feature of (primarily) the American state of Idaho . It stretches 400 Mile s (650 km) westward from northwest of the state of Wyoming to the Idaho- Oregon border. The plain is a wide flat bow-shaped depression, and covers about a quarter of Idaho. Three major Butte s dot the plain east of Arco , the largest being Big Southern Butte . The Snake River Plain traces the path of a geologic Hot Spot now centered in Yellowstone National Park . Volcanos that once covered the hot spot formed Craters Of The Moon National Monument and the Island Park and Yellowstone Caldera s. Portions of the plain are covered by Lava Field s. Many of Idaho's major cities are in the Snake River Plain as is much of its agricultural land. Also located within Snake River Plain is the Idaho National Laboratory . -- EXTERNAL LINKS AND REFERENCES
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