Which river is responsible for carving the massive depths of the Grand Canyon over millions of years?
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The mighty Colorado River spent roughly five to six million years cutting through layers of rock to form the spectacular Grand Canyon. This natural wonder stretches 277 miles long and reaches depths of over a mile, exposing nearly two billion years of Earth's geological history. Photo: Lennart Sikkema, Wikimedia Commons, CC BY 3.0.
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Source: Wikipedia (CC BY-SA)
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