The Grand Canyonis the largest known rift in the world. The canyon is a steep-sided gorge that was made by erosion from Colorado River in northern Arizona.It is beacause of heavy mineral deposits that the canyon is bright red, brown and orange in color.This canyon is a part of the large Grand Canyon National Park designated by former president Theodore Roosevelt. The park is almost 277 miles long and varies from 4 to 18 miles wide. The canyon is the main point of attraction in the nation park. Theodore Roosevelt used to come to the national park for relaxation and hunting.
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