Blowholes are commonly associated with ocean coastlines, but they exist in the desert too. One of the most well-known of these is at Wupatki Pueblo near Flagstaff.
Blowholes are essentially small openings in the earth where air blows out or gets sucked in, acting as a natural fan of sorts. Researchers in northern Arizona believe the Wupatki blowhole is connected to an extensive underground system of fractures.
It measures a few inches across and has been enclosed in a masonry box so visitors can lean over for a blast of cold air on a hot summer day.