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Why does the Grand Canyon exist?

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However, in the Grand Canyon region, most of these layers have been eroded away leaving just a few remnants, such as Red Butte (figure 4), about 16 miles (25 km) south of the South Rim of the canyon.3 The layers eroded from the Grand Staircase south to the Grand Canyon area represent an enormous volume of material, removed by sheet-like erosion over a vast area. read more

The Grand Canyon (Hopi: Ongtupqa; Yavapai: Wi:kaʼi:la, Navajo: Tsékooh Hatsoh, Spanish: Gran Cañón) is a steep-sided canyon carved by the Colorado River in Arizona, United States. The Grand Canyon is 277 miles (446 km) long, up to 18 miles (29 km) wide and attains a depth of over a mile (6,093 feet or 1,857 meters). read more

Grand Canyon Grand Canyon, Arizona, U.S., designated a World Heritage site in 1979. Encyclopædia Britannica, Inc. The greatest depths of the Grand Canyon lie more than a mile (some 6,000 feet [1,800 metres]) below its rim. read more

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