Since seeing photos of Crystal Mill, I have wanted to photograph it. I am so excited for now having had the opportunity to take this and other photos of it. This is five vertical photos stitched together. The Crystal Mill, or the Old Mill is an 1892 wooden powerhouse located on an outcrop above the Crystal River in Crystal, Colorado, United States. It is accessible from Marble Colorado via 4x4. Although called a mill, it is more correctly denoted as a compressor station, which used a water turbine to drive an air compressor. The compressed air was then used to power other machinery or tools. Today it stands as a Colorado icon, and is reputed to be the most photographed site in the state.