Suðuroyartunnilin

Suðuroyartunnilin (the Suðuroy Tunnel) is an approved undersea tunnel project in the Faroe Islands, linking the island of Suðuroy to Sandoy and Skúvoy. The tunnel will run between Djúpudalur near Skarvanes on Sandoy and Sandvík on Suðuroy, with a branch to Skúvoy. Two drilling parties, at either end, will dig towards each other, after which the branch to Skúvoy will be drilled from the main tube upward. Until its opening (earliest in 2036), all vehicles and cargo, and virtually all passenger traffic must use the ferry service.

Tunnel data from Wikidata (CC0). Summary from Wikipedia (CC BY-SA).