Rokko Tunnel



Rokko Tunnel (六甲トンネル) is a tunnel on the Sanyo Shinkansen in Japan that runs (through Rokko mountain) from Nishinomiya City to Chuo-ku, Kobe City in Hyogo prefecture with approximate length of 16.250 km. It was completed and opened in 1972, and became the longest railway tunnel in Japan and the third longest in the world (after Gotthard Base Tunnel and Wushaoling Tunnel). Up to 2023, the longest railway tunnel in Japan (the second in the world) was Seikan Tunnel with total length of 53.85 km that connects Hokkaido island and Honshu island (undersea).