a mountainside in the desert covered with saguaro cacti, ocotillo, palo verde and rocks in saguaro national park, 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 hiking harsh environment ecosystem rugged bucket list west america top blue sky wispy clouds carnegiea gigantea ocotilla fouquieria splendens pima county palo verde valley view overlook trail rocky mountainside covered ocotillo rocks