I chance upon this old email of mine found in my gmail, and think these few artworks are great!
His drawings give an amazing 3D illusion. FYI, it is draw by an artist by the name of Julian Beever who is famous for having his artwork on pavement all over the world.
Keep in mind that each drawing is totally one dimensional!



Some people are actually avoiding walking in the so called 'hole'! =D


HAHA, I find this drawing the most realistic! nice