The Seikan Tunnel (青函トンネル Seikan Tonneru or 青函隧道 Seikan Zuidō) is a 53.85-kilometre (33.46 mi) railway tunnel in Japan with a 23.3-kilometre (14.5 mi) long portion under the seabed. The track level is about 140 metres (460 ft) below the seabed and 240 m (790 ft) below sea level. It travels beneath the Tsugaru Strait — connecting Aomori Prefecture on the Japanese island Honshu and the island Hokkaido — as part of the Kaikyo Line of Hokkaido Railway Company.
thumbnail
point
location
Tsugaru Strait
opening date
1988-03-13
opening year
1988-01-01T00:00:00+02:00
operated by
Hokkaido Railway Company
owner
Japan Railway Construction Transport and Technology Agency
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