
This is a cross-eyed stereograph. Brief instructions on how to resolve this image in stereo
can be found below.
The next photo is an anaglyph of the same scene,
which you view with a pair of red-blue coloured glasses.
You must cross your eyes so that your left eye views the right image and vice-versa. You then merge the two images until they coincide. The stereo effect should then appear.
The way I do it is to hold a finger close to my nose, and focus on it
(the finger - not the nose.) The stereo pair (in the background) then appears to have three images. The centre one is the combined stereo image. With a combination of relaxing and refocussing, you should be able to resolve the centre image clearly. The trick is to shift your focus from your finger to the images, without allowing your eyes to diverge, as they would naturally tend to do.