Geograph - photograph every grid square

The south shaft of the original Thames Tunnel at Rotherhithe. The diagonal line on the wall marks the location of the original spiral staircase from when it was a pedestrian tunnel. Until November 2008 this view would have been down onto the tracks of the East London Railway, and such was only accessible to London Underground workers. As part of the refurbishment of the line in 2007-10, a concrete slab has been placed over the tracks to allow safe public viewing of the shaft itself. The small museum in the adjacent Engine House TQ3579 : Brunel Engine House, Rotherhithe will eventually be relocated and enlarged in this space. Meanwhile it can be viewed at weekends in return for a donation to the museum.