Cathedral Rock is the face of Sedona and the most photographed rock in Arizona, and the picture is nearly always the same: red spires standing over Oak Creek, doubled in the water at Red Rock Crossing. The towers are thin walls and pointed spires of red sandstone, and their shape is what gave the rock its name. Most people go to the creek rather than up the rock. At sunset the low light sets the spires burning orange, and when Oak Creek runs low and still the whole formation lands upside down in the water. The red in the stone is hematite — rust — held in grains laid down about 280 million years ago as coastal dunes.
The climb is short and steep: 1.2 miles round trip from the Back O' Beyond trailhead, about 740 feet of gain, ending in a narrow chute you pull yourself up with both hands. It comes out at the saddle between the spires, where the Verde Valley opens below and wind funnels through the gap. A third group of visitors comes for neither the climb nor the photograph, because Cathedral Rock is one of Sedona's four best-known vortex sites, and people sit quietly on these ledges for hours. The same red rock builds the rest of the country around Sedona. Bell Rock and Courthouse Butte stand a couple of miles south-east, and north of town Oak Creek cuts a shaded canyon down through it. Sedona became the world's eighth International Dark Sky Community in 2014, and the town has kept its lights low ever since. On a moonless night the core of the Milky Way stands up directly behind the towers.