Oh yes, look. Gary's written yet another post about a map of the London Tube system that he likes. Yawn. Time to move on. But wait ... this may look like a map of the London Underground but it's not.

Now I may have been guilty of wearing my heart on my sleeve slightly too much where variations on a theme of the London Underground map have been concerned; there's at least seven posts on this topic already posted.

Granted, there's the Northern Line on the map; but this is more for a sense of geographical perspective than anything else.