'''Gotthard Base Tunnel''' runs 57 kilometers (around 35 miles) through the [[Swiss Alps]], and it was completed after 6 decades of work in 2010.<ref>[http://www.washingtontimes.com/news/2010/oct/15/joyous-swiss-celebrate-longest-tunnel-breakthrough/ Joyous Swiss celebrate longest tunnel]</ref> | '''Gotthard Base Tunnel''' runs 57 kilometers (around 35 miles) through the [[Swiss Alps]], and it was completed after 6 decades of work in 2010.<ref>[http://www.washingtontimes.com/news/2010/oct/15/joyous-swiss-celebrate-longest-tunnel-breakthrough/ Joyous Swiss celebrate longest tunnel]</ref> |