WORLDKINGS - Worldkings News - Asia Records Institute (ASRI) Seikan Tunnel: World’s deepest rail tunnel under sea level
01-10-2022
(WorldKings.org) The railway track runs 240 meters below the sea surface, and is the deepest railway line in the world.
WORLDKINGS - Worldkings News - Asia – Seikan tunnel: The world's longest tunnel with an undersea segment
14-12-2019
(Worldkings.org) Seikan tunnel is the world's longest tunnel with an undersea segment.
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