The Grand Canyon is a deep gorge in Arizona, formed by the Colorado River. It was cut out by vertical river erosion through the multi-coloured layers of the high Colorado plateau. The Grand Canyon is 277 miles long,18 miles wide and it is more than a mile deep. It is referred to as one of the Natural Wonders of the World and attracts over 5,000,000 visitors every year. The Grand Canyon Skywalk was opened in March 2007 and is a horseshoe-shaped, glass walkway that allows tourists to walk 70 feet past the edge of the Grand Canyon wall and stand 4,000 feet above the Colorado River. The canyon was and is also home to many natives. Such as the ancestral Pueblo people followed by Paiute, Navajo, Zuni and Hopi tribes, but the Havasupai people now claim the Grand Canyon as their ancestral home. According to tribal history, the Havasupai have lived in and around the canyon for more than 800 years.
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