is a tunnel on the West-JR's Sanyō Shinkansen line
in Japan that runs from Nomio, Kurose town to Kaita town, Aki district, Hiroshima city in Hiroshima Prefecture with approximate length of 13.030 km. It was completed and opened in 1975.
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 Aki Tunnel on Sanyo Shinkansen line