Stare at the four black dots in the center of the image for 30 – 60 seconds.
Then quickly close your eyes and look at something bright (like a lamp or a window
with sunlight coming through it). You should see a white circle with an image inside it
love the black dots, in fact love all illusions, hey Pete do you have any of the impossible structure illusions like the never-ending staircase or the impossible cube?