Seikan Tunnel
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The Seikan Tunnel is a 53.85-kilometre dual-gauge railway tunnel in Japan, with a 23.3-kilometre segment running beneath the seabed of the Tsugaru Strait, which separates Aomori Prefecture on Honshu,
Train approaching Tappi-Kaitei Station in July 2008
Location of the Tsugaru Strait in Japan
1988 Seikan Tunnel 500 yen coin
Entrance to the tunnel from Honshu side; note the dual-gauge tracks
Tappi-Kaitei Station
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Tappi-Kaitei Station was a railway station on the Kaikyo Line in Sotogahama, Aomori, Japan, operated by Hokkaido Railway Company. The station was located within the Seikan Tunnel below the seabed of t
Seikan Tunnel
…and are proposed to be extended to Sapporo by 2038. The tunnel has 52 km (32 mi) of continuous welded rail. Two stations used to be within the tunnel—Tappi-Kaitei Station and Yoshioka-Kaitei Station. They were the first railway stations in the world built under the sea. Both closed with the construction of the Hokkaido…
Tappi Kaitei Tunnel of Hokkaido Railway Company