the sandy valley overlook trail leading through a desert landscape in saguaro national park, in tucson, arizona

saguaro national park tucson mountain district arizona usa botany nature cacti vegetation outdoors spring landscape desert tourism travel adventure vacation sight solitude peaceful creosote bushes hiking harsh environment ecosystem rugged bucket list west america top blue sky wispy clouds carnegiea gigantea prickly pear opuntia pima county palo verde valley view overlook trail dry scrib fire hazard sandy leading