Workers have a break during the installation of the railway tracks in the NEAT Gotthard Base tunnel near Erstfeld May 7, 2012. Crossing the Alps, the world's longest train tunnel should become ... more 
Workers have a break during the installation of the railway tracks in the NEAT Gotthard Base tunnel near Erstfeld May 7, 2012. Crossing the Alps, the world's longest train tunnel should become operational at the end of 2016. The project consists of two parallel single track tunnels, each of a length of 57 km (35 miles) REUTERS/Arnd Wiegmann (SWITZERLAND - Tags: BUSINESS CONSTRUCTION EMPLOYMENT TRAVEL) - RTR31QEL less 
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Yahoo News | Photo By REUTERS
Wed, Apr 3, 2013 12:00 PM EDT