hiking on the hiking trails surrounded by saguaro, cholla and other cacti in the semi desert landscape of the mcdowell mountains

104th activities america arizona bell boulders cacti cactus cholla county desert dry environment feature flora forest formations geology hiking landmark landscape layers levee maricopa mcdowell monzogranite mountain mountains nature other outdoors park peak phoenix preserve range reserve ridge road rock rocks rugged saguaro sates scottsdale semi semidesert sky sonaran spectacular states str surrounded thumb toms trail trails united usa valley views wilderness winter