Tsugaru Tunnel
The 181st longest tunnel in the world
Tsugaru Tunnel (Tsugaru Ton'neru) is a tunnel on the JR's Tsugaru-Kaikyō Line of the Hokkaido Railway Company in Japan that runs from Sotogahama-cho to Imabetsu-cho in Aomori prefecture with an approximate length of 5.880 km.
Tunnel data from Wikidata (CC0). Summary from Wikipedia (CC BY-SA).