The Copper Canyons, nestled in the Sierra Madre Range, are actually several large canyons boasting a grandeur four times larger than the Grand Canyon of the United States, although different in nature; narrower, deeper, and more verdant.  The Copper Canyons are the home of the Tarahumara Indians who have been able to preserve their culture in the isolation of the region.  The Tarahumaras are known for their running races, sometimes performed as long as three days and three nights