This photograph is a stereo pair that allows a viewer to see the desert landscape in 3-D. To do that, look at the black line separating the images and cross your eyes to overlap the left and right images—you should see three images, the stereo image is in the center with the left and right images on each side. Seeing a stereo image may take a bit of practice and you may need to rotate your head to fuse the two panels. You can enlarge the image by clicking on it. The larger image may be easier to view. Another stereo pair can be seen here.