Tags: arizona,carter canyon,catalina highway scenic area,coronado national forest,fr18,pima county,santa catalina mountains,santa catalina ranger district,steward observatory,summerhaven,university of arizona

Tags: arizona,catalina highway scenic area,coronado national forest,fr18,mount bigelow,pima county,santa catalina mountains,santa catalina ranger district,steward observatory,university of arizona,water tank,westfall knob