But through its doors lies the dark world below London, the Thames Tunnel. An unprecedented feat of engineering ingenuity, ... It required a 1,000-ton instrument called the tunneling shield, ...

The experience of walking a workig railway tunnel. Image (C) Tim Sandle. The experience of walking a workig railway tunnel. Image (C) Tim Sandle. Buried underneath the River Thames is the world ...

In order to build the tunnel, though, access was needed to a point where the tunneling could start. For this, a shaft was to be built on the south side of the Thames in Rotherhithe.