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Canyon Planet   -  By: Babak A. Tafreshi

The Grand Canyon fades into the twilight minutes after the sunset. The Grand Canyon in northern Arizona 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

 


    Item Code: 102819


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