The Book Room Optical Illusion was randomly uploaded to the site. This picture is of a walk way through a bottomless pit made completely out of books! Would someone really make this tunnel of books or is there something that I am missing here? If he steps to the side is he going to fall to his death? Or is there something of an illusion going on here.. what do you guys think?

Book Room Optical Illusion
Book Room Optical Illusion