Inside Urbis - hidden Manchester

I went to see this photography exhibition at Urbis today with a friend from work. On display are photographs of the hidden tunnels and disused shelters that still exist under the city today - a fact that I find fascinating.

I know that there is a similar collection of tunnels and shelters underneath where I work and I am planning to go investigating with my camera at some point.

Photos were not permitted of the above exhibition but elsewhere photos are fine apparently. The above photo was taken from this exhibition.