Saguaro National Park is in southern Arizona. Its 2 sections are on either side of the city of Tucson. The park is named for the large saguaro cactus, native to its desert environment. In the western Tucson Mountain District, Signal Hill Trail leads to petroglyphs of the ancient Hohokam people. In the eastern Rincon Mountain District, Cactus Forest Drive is a loop road with striking views of the desert landscape.
Some of these cacti can reach heights of between 30 and 50 feet. The arms of the saguaro develop after the age of 75 years.
Believe it or not Valerie is standing at the base of this monster.
FastGlassBlog 
Outstanding photos. Any of the flowers from the Century plant? The second cactus photo looks like the guy has a mouth!
The only flowers were on the barrel cacti. We didn’t see many century plants.