Trying to access a page that doesn't exist on this site returns a colorful 404 page. For example, try to access the question number \$\sqrt{-1}\$ and you get the 404 page with the image below.
I'd really like to know the origin of this image. Is this a computer interconnect architecture? A notable or historic effort?
I'm not asking for pure speculation. A google image search shows this image is used in several places for effect (e.g. slide 14 "The Yellow Wall"), but I haven't been able to track down the original source or a discussion of what is being shown.