is a tunnel on Hokuhoku Line that runs through Yakushi mountains in Tokamachi city, Niigata prefecture with total length of 6.119 km. It was built and completed in 1997.
See also List of tunnels in Japan Seikan Tunnel undersea tunnel between Honshu-Hokkaido islands Kanmon Railway Tunnel undersea tunnel between Honshu-Kyushu islands Sakhalin–Hokkaido Tunnel Bohai Strait tunnel
References
External links Gov. maps.gsi.go.jp Tunnels in Hokuhoku line.