Gates Pass

Tucson Mountain Park, Tucson, AZ

Sonoran Ridgeline

Tucson Mountain Park, Tucson, AZ

Zombie Saguaro

Tucson Mountain Park, Tucson, AZ

At the Pass

Tucson Mountain Park, Tucson, AZ

Young Saguaro Spines

Tucson Mountain Park, Tucson, AZ

Basin and Range

Sonoran Desert Museum, Tucson, AZ