The Santa Caltina Mountain Above Sabino Canyon. Clouds cover the highest peak, Mt. Lemmon, in the center. — Image by kenne.
“The Catalinas are one of about 65 ranges commonly known as the Sky Islands,
and these, in turn are a subregion of a much larger geological province
known as the Basin and Range Geological Province.”
(A Natural History of the Santa Catalina Mountains, Arizona, by Richard C. Brusca and Wendy Moore)
