The image shows a long wall that looks hand-drawn, covered with dozens of tiny colorful doors. At first, they seem like a simple drawing, bu...

The image shows a long wall that looks hand-drawn, covered with dozens of tiny colorful doors. At first, they seem like a simple drawing, but after a few seconds, the eyes begin to play tricks — some of the doors appear to slowly open, revealing endless dark spaces behind them. The longer you stare, ...