Sengan Tunnel
Sengan Tunnel is a tunnel on National Sengan Road #46 in northern Japan that runs between Iwate prefecture and Akita prefecture borders with approximate length of 2.544 km. It was completed and opened in 1975.
Sengan Tunnel is a tunnel on National Sengan Road #46 in northern Japan that runs between Iwate prefecture and Akita prefecture borders with approximate length of 2.544 km. It was completed and opened in 1975.