<human>: Can you condense the text into three sentences or less?

Ok reddit, I know this is similar to some other recent posts, but i honestly have nowhere else to turn.

I am looking for a poster/painting/image which I am almost certain was called "Blue Stair Maze" or something along those lines. It was a very detailed, vertiable smorgasborg of stairs (all blue) in an Escher-esque setting, i.e. they went sideways, frontways, backways and upsidedownways etc. It was so amazing that one could stare at it for hours and still not have a clue how to travers the epic landscape. 

My good friend and I spent an entire year of school looking at this poster on our classroom wall, and now that we are at different schools, I would really like to get him a copy of this poster for the holidays. However, google has failed in every respect, and I cannot seem to locate it anywhere. 

Does anyone out there know what I'm talking about?
<bot>: Trying to find an epic poster of a blue stair maze for a friend. Help me reddit, you're my only hope!