An old step-sider heading south on U.S. 191 near Pearce, Arizona.

Saguaros in a side canyon in the Santa Catalina Mountains, Arizona.

Soaptree Yuccas (Yucca elata) and arid grassland near Mescal, Cochise County, Arizona.

A twisted Saguaro, Saguaro National Park, Tucson Mountains, Arizona.

Flowers of the Tree Cholla (Cylindropuntia imbricata), Pima County, Arizona.

Sun setting near Rincon Peak, Cochise County, Arizona.

Fremont Cottonwoods (Populus fremontii), St. David, Arizona.

Looking south toward the Whetstone Mountains, Cochise County, Arizona.

A blazing sunset behind Rincon Peak, Cochise County, Arizona.

Englemann Prickley Pear (Opuntia engelmannii), Pima County, Arizona.

The Palisades of the Desert, Grand Canyon National Park, Arizona.

A storm front passing to the north, J-Six Ranch, Cochise County, Arizona.

Rhyolite columns, Wonderland of Rocks, Chiricahua National Monument, Arizona.

A creek recharged by the onset of the monsoon season, Soldier Canyon, Santa Catalina Mountains, Arizona.

The Organ Pipe Formation in Bonita Canyon, Chiricahua National Monument, Arizona.

Hole in the rock in the Hoodoos area of the Santa Catalina Mountains, Arizona.

Teddy Bear Chollas (Cylindropuntia bigelovii), Apache Trail, Superstition Mountains, Arizona.