The images on this page are stereo pairs....When viewed correctly they will produce a three dimensional image.
Sit squarely to the screen at a comfortable viewing distance and stare at the pair of images....try to look through them rather than focus on them. Once your eyes adapt you should see three images with the centre image in 3D.
Some people see the correct effect better with the images swapped around. The right-hand image can be dragged across if neccessary.
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