Chiricahua National Monument
About 27 million years ago a large volcanic eruption deposited huge quantities of ash in what is present-day Arizona. After the ash solidified, years of erosion slowly turned the deposits into school-bus-sized columns of rock. I drove by the monument and stopped for a day of hiking around the towers and canyons in the spring of 2010. Some of the towers were so tall that they could not fit in one image, so I had to stack two panoramas on top of each other to accurately capture this scene. I especially liked the near-human qualities of some of the profiles of the rocks.