Nested square tunnel coloring page
Squares inside squares, each turned a little further than the one outside it, so the page pulls the eye into a tunnel. Color from the outside in and the depth builds. Every optical illusion here is strongest at high contrast, so give neighbouring shapes colors far apart in tone: one very light, one very dark.
A full scene with a background and smaller areas.
Free for personal, home and classroom use. See the license. Printing tips: how to print coloring pages.
