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Desert View Panorama - By: Babak A. Tafreshi
The Grand Canyon and the Desert View Watchtower in the northern Arizona. The Grand Canyon is the longest canyon on the Earth, a steep-sided gorge carved by the Colorado River steadily in about 17 million year time span. The canyon is 446 km long, ranges in width from about 6 to 29 km and attains a depth of more than 1.6 km or about a mile. Date: Nov. 2012
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