Bentenyama Tunnel



Bentenyama Tunnel (弁天山トンネル) is a tunnel on Tokaido Shinkansen operated by Central Japan Railway Company located between Shin-yokohama Station and Odawara Station with total length of 1.316 km. It was built and completed in 1962. The Benten-yama tunnel, spanning approximately 1.3 kilometers, sits close to Kozu area in the southwestern region of Oiso hill land (Kanagawa Prefecture), predominantly characterized by diluvium-tertiary formations of soil. Alongside the tunnel's path, the hill is primarily composed of alternating layers of sand gravel beds and tuffaceous mudstone beds.