Norway's extreme coastal topography, characterized by high mountains and deep fjords, poses a challenge for the country's Highways Authority, responsible for reating its transportation infrastructure.
The spectacular Lærdal tunnel (pictured) opened in 2000. At 24,510 meters it is the world's longest road tunnel. It will soon be joined in the record books by the Solbakk tunnel, in Norway, which will be the world's longest subsea road tunnel, scheduled to open 2017. Two three-boom electro-hydraulic drilling jumbos under the trademark Sandvik DT1131i and two two-boom elecro-hydraulic
jumbos, under the trademark DT921i, will be used to excavate the tunnel.
See more tunneling images taken by Muzaffer Bayazitoglu, Sandvik Turkey, February 2015, at Sandvik Instagram