Shin-Karikachi Tunnel
The 448th longest tunnel in the world
Shin-Karikachi Tunnel (Shin-Karikachi tonneru) is a tunnel on JR Hokkaido's Nemuro Main Line that runs between Ochiai Station and Shintoku Station in Tokachi District, Hokkaido with total length of 5.790 km. It was built and completed in 1966.
Tunnel data from Wikidata (CC0). Summary from Wikipedia (CC BY-SA).