Norðoyatunnilin
…sea level. The maximum gradient is approximately 6%. The tunnel entrances are near the towns of Leirvík on Eysturoy, and Klaksvík on Borðoy. Until the Eysturoyartunnilin opened in December 2020, Norðoyatunnilin was the longest tunnel in the Faroe Islands. In 1988 Landsverkfrøðingurin (the national office of public works…