tunnel drilling machine  
 

Tough tunneller

Outside the Swiss Museum of Transport in Luzern stands this monster machine, and our photographer obviously spotted a good opportunity to take a picture for the game of finding the difference between photographs. For this was the very tunnel boring head, called ‘Sissi‘, of the tunnelling machine that cut the Gotthard Base tunnel for the high-speed rail link joining northern and southern Europe. The 57 km (35 mile) tunnel under the Alps is both the deepest and the longest railway tunnel in the world – longer than Japan’s 54km Seikan tunnel, and longer than the 51km Channel Tunnel that links France and the UK. The project, designed to increase trade between the countries of Europe, and remove freight from the roads of Switzerland, has been underway since getting the go-ahead in a referendum in 1992. The tunnel opened on 1 June 2016, at a cost of more than 12 billion Swiss Francs (11.7bn USD or 11.2 bn Euros).
Sissi is there at the Swiss Museum of Transport to welcome visitors to a special exhibition about the Gotthard Base tunnel, the New Railway Link through the Alps (NRLA) and the history of north-south Alpine travel. She appears here, though, to provide you with a challenge in our picture difference game.

     
 
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