A disused underground railway tunnel in London.
At a guess this has been out of use for a long time now. No electrics are present in the tunnel and I did not see any ventilation shafts either.
After a tight squeeze and a climb down a long ladder we find ourselves under the city of London in a long railway tunnel. We wander along the tunnel and not a lot seems to change. After around a five minute walk I set up my camera to get a few shots. As there doesn't seem to be much to see here I mainly just messed around with lighting.