A spur road off the highway to Ajo leads up the mountain to the observatory, some twelve miles away and almost 4000 feet higher. That equates to an average grade of roughly six percent on a twisting, narrow road with sheer drops and few guard rails. The drive up presented some good views of the peak itself, as well as the surrounding countryside. It really drove home how the various mountain ranges just seem to pop up out of the flat desert terrain.
While I was unable to photograph the interior of the observatory, I did get a photo of the poster showing the equipment inside. Notice the people standing near the mirror housing. Also, from inside the building, I got a pretty good view of the mountain top and many of the observatories scattered about.
At the visitor center, a mural on an exterior wall pays homage to the Mayans, who built one of the earliest observatories at Chichen Itza, Mexico around 900 AD. The circular element at bottom center represents the design of the Mayan observatory, while the mural also depicts the sun, thee moon and several planets. The Mayans were able to predict lunar and solar eclipses, and developed a calendar more precise than the Gregorian calendar in use currently.