Computer graphics
kataramanaravana
Here, we see endless stairs, which consists of a set of cubes. Letters on lower cubes put together the name of Dutch artist M.C. Escher, who used impossible staircase in his artwork "Ascending and Descending".
The image was found at http://www.rueduteeshirt.com/lesvisuels.jsp?view=2&IDVISUEL=2221
