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We know of hundreds of extraordinary and daring projects of roads, bridges, tunnels and aqueducts. In its time, the transport artery under the English Channel caused a great stir; just imagine – a 51-kilometer-long tunnel, of which 39 kilometers along the seabed. However, what is being built in Norway now looks simply incredible – 1,121 kilometers of road, part of which runs underwater. What technologies make it possible to build a new wonder of the world and what prompted the Scandinavians to invest 47 billion dollars in this project?