You searched for: Language UND Remove constraint Language: UND Place San Gabriel Mountains, Santiago Canyon, Canyon & slopes draining W. slopes of Santiago Canyon ca. 1 mi. SW of confluence with Little Rock Creek. Pacifico Mtn. 7.5' USGS topographic quadrangle. Remove constraint Place: San Gabriel Mountains, Santiago Canyon, Canyon & slopes draining W. slopes of Santiago Canyon ca. 1 mi. SW of confluence with Little Rock Creek. Pacifico Mtn. 7.5' USGS topographic quadrangle.