Channel Tunnel train, 1991.
© National Railway Museum / Science & Society Picture Library -- All rights reserved
Train inside the Channel Tunnel during its construction, by Chris Hogg, July 1991. During the construction of the tunnel, many trains ran in and out of the tunnel, bringing spoil, workers and equipment in and out of the tunnel. The tunnel took 7 years to build and finally opened in 1995. It cost £2,700 million to build.