A near full moon lit up the arch and the distant Sierra Neveda. The constellation Orion is on the right side of the sky, and Sirius, the brightest star in the sky is near the center. Depth of field is always a challenge at this location as it is impossible to get more than 10 or so feet from the arch without bumping into a small cliff. F8, 15 sec, 2500 ISO. The 6D is a great low light light performer!