Nihonzaka Tunnel
The 348th longest tunnel in the world
Nihonzaka Tunnel (Nihonzaka tonneru) is a tunnel on Tōkaidō Shinkansen that runs from Shizuoka Station and Kakegawa Station in Shizuoka city, Shizuoka Prefecture with total length of 2.174 km. It was built and completed in 1964.
Tunnel data from Wikidata (CC0). Summary from Wikipedia (CC BY-SA).