Baboquivari Mountains (BAH-bo-kee-VAH-ree), Pima co., S Ariz., extend c.40 mi/64 km N from Mex. line; rise to 7,730 ft/2,356 m in Baboquivari Peak, c.50 mi/80 km NW of Nogales; forms part of E boundary of Tohono Oodham (Papago) Indian Reservation; 31°46'N 111°35'W. Kitt Peak (6,875 ft/2,096 m) in N, site of Kitt Peak Natl. Observatory.