Grand Canyon

 The Grand Canyon is 277 miles (446 km) long, up to 18 miles (29 km) wide and attains a depth of over a mile (6,000 feet / 1,800 metres) For thousands of years, the area has been continuously inhabited by Native Americans who built settlements within the canyon and its many caves; it is a steep-sided canyon carved by the Colorado River in the state of Arizona. On Feb 26, 1919 U.S. President Woodrow Wilson signs an act of U.S. Congress establishing most of Grand Canyon as a National Park. Also considered as one of the seven wonders of the world.

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