File:Colorado River, South Rim, Grand Canyon National Park, Arizona (14494945101).jpg

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The Grand Canyon is a steep-sided canyon carved by the Colorado River in the United States in the state of Arizona.

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 or 1,800 meters). Nearly two billion years of the Earth's geological history has been exposed as the Colorado River and its tributaries cut their channels through layer after layer of rock while the Colorado Plateau was uplifted. While the specific geologic processes and timing that formed the Grand Canyon are the subject of debate by geologists, recent evidence suggests the Colorado River established its course through the canyon at least 17 million years ago. Since that time, the Colorado River continued to erode and form the canyon to its present-day configuration.

Grand Canyon National Park is the United States' 15th oldest national park. Named a UNESCO World Heritage Site in 1979, the park is located in Arizona. The park's central feature is the Grand Canyon, a gorge of the Colorado River, which is often considered one of the Seven Natural Wonders of the World. The park covers 1,217,262 acres (1,902 sq mi; 4,926 km2) of unincorporated area in Coconino and Mohave counties.

en.wikipedia.org/wiki/Grand_Canyon_National_Park

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Source Colorado River, South Rim, Grand Canyon National Park, Arizona
Author Ken Lund from Reno, Nevada, USA
Camera location36° 10′ 51.24″ N, 111° 47′ 53.23″ W Kartographer map based on OpenStreetMap.View this and other nearby images on: OpenStreetMapinfo

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This image was originally posted to Flickr by Ken Lund at https://flickr.com/photos/75683070@N00/14494945101. It was reviewed on 4 December 2015 by FlickreviewR and was confirmed to be licensed under the terms of the cc-by-sa-2.0.

4 December 2015

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current03:55, 4 December 2015Thumbnail for version as of 03:55, 4 December 20153,835 × 2,875 (1.27 MB)INeverCry (talk | contribs)Transferred from Flickr via Flickr2Commons

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