Hayabusa Shinkansen runs through an undersea tunnelThe Hayabusa service operates between Tokyo and Hokkaido, with the route passing through the The tunnel was opened in 1988 and was built to withstand the challenging weather and geological conditions faced by Japan. At its deepest point, the railway runs hundreds of feet below sea level, making the journey particularly striking for passengers.Indian traveller shares experience of 320 kmph train rideSharing his experience on Instagram, the content creator s ...