I found this guided walking tour pamphlet at a bookstore in Tucson. Published by the Southwest Parks and Monuments Association, it is designed to accompany wanderers through Rhyolite Canyon. Rhyolite Canyon is part of Chiricahua National Monument, more famous for the spectacular hoodoos clustered in the Heart of Rocks.
I picked up the pamphlet for the illustrations. They're beautiful depictions of birds and plants by Lawrence Ormsby, a talented illustrator from Marana, AZ (just outside Tucson) who's illustrated many books on animals.