A field of cotton on the Pima Native American Reservation.  Camelback mountain in the distance…

From Wikipedia:

Early in its history, Arizona’s economy relied on the “Five C’s”: copper (see Copper mining in Arizona), cotton, cattle, citrus, and climate (tourism). At one point Arizona was the largest producer of cotton in the country. Copper is still extensively mined from many expansive open-pit and underground mines, accounting for two-thirds of the nation’s output.