Sengan Tunnel

Sengan Tunnel (仙岩トンネル) 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. [1] [2] [3] [4]

Sengan tunnel on Iwate side
Sengan tunnel ventilation

References
  1. "Sengan Tunnel". weblio.jp website. Retrieved 13 October 2023.
  2. "仙岩トンネル". mapio.net website. Retrieved 13 October 2023.
  3. "Sengan Tunnel] (in Japanese)". Retrieved 13 October 2023.
  4. "Sengan Tunnel (Google maps)". Retrieved 13 October 2023.

See also
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