Saguaro National Park
Sunset, Cacti in West Unit of Saguaro National Park, Tucson, Arizona
A R I Z O N A
S A G U A R O FAQs
Where do they grow?
Only in the Sonoran Desert of southwestern and
south-central Arizona and western Sonora, with
a very few in southern California.
What are they mostly made of?
Cactus in the Wild West of Saguaro National Park, Tucson, Arizona
The Kitt Peak National Observatory (KPNO) is located over the edge of mountain ranges.
The Kitt Peak National Observatory (KPNO) is a United States astronomical observatory site located on 2,096 m (6,880 ft) Kitt Peak of the Quinlan Mountains in the Arizona-Sonoran Desert on the Tohono O'odham Nation, 88 kilometers (55 mi) west-southwest of Tucson, Arizona. With 24 optical and two radio telescopes, it is the largest, most diverse gathering of astronomical instruments in the world. The observatory is administered by the National Optical Astronomy Observatory (NOAO).