Grand Canyon was largely unknown until after the Civil War. In 1869, Major John Wesley Powell, a one-armed Civil War veteran with a thirst for science and adventure, made a pioneering journey through the canyon on the Colorado River. He accomplished this with nine men in four small wooden boats. Though only six men completed the journey. His party was, as far as we know, the first ever to make such a trip.
Last updated: February 24, 2015