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Tunnel rig in tunnel

Driving under the fjords

Building a tunnel under the sea

Driving under the fjords

A tunnel under water – how do you build that? With more than 40 years of experience of constructing tunnels, Knut Storli, foreman at contractor NCC, is one of Norway’s tunnel experts. Here are the challenges of building tunnels under the sea.

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A tunnel under water – how can that be done? Knut Storli, Foreman at contractor NCC, explains the challenges of building tunnels under the sea.

Blasting foreman Arne Oddvar Haugeland has worked in tunnels for nearly half a century. Every day, he faces the risks of working subsea. “You need to trust your colleagues,” he says.

One was dug by hand in China, another reshaped the geography of Europe and a third doubles as a drainpipe. Welcome to the fascinating world of tunnels.