© Jonathan Bailey
More information regarding this species is available via bugguide.net/node/view/585.
This species is geographically distributed in the extreme south-east corner of Arizona and areas in Mexico.
More information about this species can be found via tucsonherpsociety.org/inhabitants/yarrows-spiny-lizard/.
Rhyiolitic tuff, formed from a massive volcanic eruption that took place about 27 million years ago, has eroded over time, forming these iconic pillars for which the National Monument was designated to protect.
More information can be found via www.nps.gov/chir/learn/nature/geologicformations.htm.