is a tunnel on Ojiya-Kawaguchi Yamato line in Japan located in Ojiya city, Niigata prefecture with approximate length of 0.512 km. It was completed and opened in 1983.
See also List of tunnels in Japan Seikan Tunnel Tappi Shakō Line Sakhalin–Hokkaido Tunnel Bohai Strait tunnel
References
External links Gov. maps.gsi.go.jp Shiodani Tunnel pictures Shiodani Tunnel (in Japanese)