Seikan Tunnel Museum

The Seikan Tunnel Tappi Shakō Line is a Japanese funicular line in Sotogahama, Aomori, operated by the Seikan Tunnel Museum. The 3 ft narrow gauge line descends from the museum near Cape Tappi into an underground station on the Seikan Tunnel, which is one of the longest railway tunnels in the world, second to the Gotthard Base Tunnel in Switzerland that opened in June 2016. Transfer to other stations is not possible from the museum.

Tappi-Kaitei Station, the JR station in the tunnel, was installed for fast evacuation. Passengers of the funicular must join a guided tour that takes them back to the museum.