Eiksund Tunnel

The Eiksund tunnel is an undersea tunnel in Møre og Romsdal county, Norway, which runs under the Vartdalsfjorden connecting the municipalities of Ørsta and Ulstein. The tunnel is 7,765 metres long and reaches a depth of 287 metres below sea level, and was the deepest undersea tunnel in the world until Norway's Rogaland county opened its 292 m deep Ryfast tunnel system in December 2019.

The tunnel was built as part of a large project including 3 tunnels and a bridge connecting several islands to the mainland. The bridge–tunnel complex serves the municipalities of Herøy, Sande, Ulstein, Hareid, Ørsta, and Volda, which together have over 40,000 inhabitants. The Eiksund Bridge joins Hareidlandet island and the village of Eiksund with the nearby island of Eika. The Eiksund Tunnel begins at the south end of the bridge goes under the Vartdalsfjorden and connects to the mainland near the village of Ørsta.

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