It is 20 years since the
Channel Tunnel was officially opened. Both Queen Elizabeth II and
France's President Francois Mitterrand attended the initial ceremony in
Calais on 6 May 1994, before travelling through the Tunnel, or le tunnel
sous la Manche in French, for a similar event marking its opening, in
Folkestone.
It is impossible to explain all 31.4 miles (or 50.5km) of the Channel Tunnel without using lots of numbers. So here goes.