Follow your exit number

The pedestrian subway in Marble Arch is extraordinarily complicated. And there are several other tunnels and exits that aren't marked on this map as well! (see notes for details of a few of them). It's being closed imminently and replaced with surface crossings.

 

There's also this extraordinary tunnel at the bottom left (parallel to the car park):

www.flickr.com/photos/swissdave/2453856095/

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Taken on August 28, 2007