These images can be seen in 3-D by looking from about 24 inches from your screen and crossing your eyes, do not change your focus just force your eyes to cross and make three images of each rock... the center image should be in 3-D (you may have to tilt your head left or right to get your eyes level..work on merging the center image and after it starts working you can block out the two(distracting) side images with your hands)