The Greenwich Foot Tunnel crosses beneath the River Thames in East London, linking Greenwich (Royal Borough of Greenwich) in the south with the Isle of Dogs (London Borough of Tower Hamlets) to the north.
Camera Nikon D3100
Exposure 0.2 sec (1/5)
Focal Length 20 mm
ISO Speed 400
For more information – http://en.wikipedia.org/wiki/Greenwich_foot_tunnel