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The Grand Canyon is beleived to be at least 17 million years old. The Grand Canyon was formed by erosive activty from the Colorado River.
http://answers.ask.com/Science/Nature/how_was_the_...
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Grand Canyon is formed due to impact of air, water & weather on the mountains for thousands of years. There is no any exact formation date.
http://answers.ask.com/Science/Nature/when_was_the...
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The Grand Canyon was formed by the Colorado River. Throughout the years the water and winds have carved out the beautiful land scape. The Colorado River has had several course in
http://answers.ask.com/Science/Nature/what_formed_...
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The Grand Canyon was formed by the Colorado River. The gorge was formed over a 5.4 million year period. The canyon is 277 miles long and has a width from 4 to 18 miles. The canyon
http://answers.ask.com/Science/Other/how_the_grand...
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