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Historically a major trade and travel artery for North America because it is the northernmost Rocky Mountain pass that stays snow-free throughout the year. Indians used pass long before Spaniard Cabeza de Vaca, thought to be first white man in area, crossed it about 1536. Juan de Onate brought first cattle into U.S. through the pass in 1598. Route was heavily traveled during California gold rush, 1849, and in later years important stage lines and railroads crossed Rockies here. Today the pass lies on one of three major travel routes across the continent. (1968) |
