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Did you know? The Grand Canyon is 277 miles long and up to 18 miles wide. The Grand Canyon took 3-6 million years to form; erosion continues to keep making it bigger. It just keeps getting bigger.
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No one has ever found fossils in the grand canyon they have only found foot prints. the footprints were only made up of reptiles and amphibians. Here are some facts The Grand Canyon was formed by the Colorado River, which flows west through the canyon and averages about 300 feet width, 100 feet in depth and flows at an average speed of four miles per hour.
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The Grand Canyon was formed by the Colorado River, which flows west through the canyon and averages about 300 feet width, 100 feet in depth and flows at an average speed of four miles per hour. The Grand Canyon includes approximately 70 species of mammals, 250 species of birds, 25 types of reptiles and five species of amphibians .
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This picture is a good background. The Grand Canyon is considered one of the natural wonders of the world because of its natural features. The exposed strata, layer upon layer, rise over a mile above the river, representing one of the most complete records of geological history that can be seen anywhere in the world. Bla Bla
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http://www.havasupaitribe.com/facts.html These are my websites.