Blindingly Obvious

I was never much cop at those Magic Eye puzzles so I guess I shouldn’t be surprised that I stood staring but not getting Paul Insect’s doctored Tube Map at the Bullion show. I could see an area shaded black with a line coming from it:

Of course looking at it again and standing back a bit further it becomes obvious whats going on – but just in case here’s a photoshopped version that makes it clear:

All of which reminds me of the excellent animalsontheunderground site.