Nasty little powercut affected the Oedo Metro line in Tokyo the other day. (More coverage here)

That line is a bit weird compared to the other Metro lines, in that it uses small carriages, like the ones you get on a lot of the London Underground lines. I think this is because the lines are very deep underground, which meant it was not possible to have the normal large size trains running through the tunnels.

So, getting stuck down there can’t have been a nice experience to be honest.