Ohara Tunnel
Ohara Tunnel (Ohara tonneru) is a tunnel on Iida Line that runs from Misakubo Station and Ōzore Station in Hamamatsu city, Shizuoka Prefecture with total length of 5.063 km. It was built and completed in 1955.
Tunnel data from Wikidata (CC0). Summary from Wikipedia (CC BY-SA).