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 ...

THIS fine quarto volume furnishes a very valuable and comprehensive history of a system of tunnelling, especially under rivers and in water-bearing strata, which was inaugurated by Sir Marc ...

A Shinkansen bullet train passes through the Seikan Tunnel, the world's longest undersea tunnel that connects two of Japan's main islands by rail, in Hakodate, northern Japan on March 12, 2018.

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.

The shield is actually a sharp-edged cylinder that cuts through the earth, squeezing the earth in at the shield's face. Tunnel workers gather the muck and dirt as it pours in.