Mount Spalding, The Sawtooth and Mount Bierstadt (left-to-right) as seen from Guanella Pass, Colorado.
Two lodgepole pine trees grow from a rocky outcropping at Colorado‘s Rocky Mountain National Park.
The extensive communications infrastructure of the United States Government’s Cheyenne Mountain Complex—former headquarters of NORAD—atop Cheyenne Mountain, Colorado Springs, Colorado.
The ruins of the original Summit House—built in 1873—on the summit of Colorado‘s Pikes Peak.
The wing of an Airbus A321 over the western front of the Rocky Mountains near Montrose, Colorado.