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John Wesley did not discover the Grand Canyon. You are thinking of Maj. John Wesley Powell, who made the first journey down the Colorado River through the canyon with nine men, 24 May-30 August 1869. However, the earliest reference is Pedro de Castañeda's account of a small group of Spanish explorers who found it after hearing stories of a large canyon during a visit to the Hopis in 1540. The canyon was little known until Lt. Joseph C. Ives and Dr. J. S. Newberry visited its lower end in April 1858 and brought back the first geological description of the region.

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15y ago

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