KnowraUnderwater tunnelLinked fromLinked fromThe 3 pages that link to Underwater tunnel, each with the reason it gives.All 3Narrower topic 3Seikan TunnelNarrower topic: The Seikan Tunnel is a railway example, with much of its route beneath the strait.Bohai StraitNarrower topic: The proposal belongs to this demanding class of infrastructure projects.Tokyo Bay Aqua-LineNarrower topic: Most of the Aqua-Line’s western crossing runs through a tunnel beneath Tokyo Bay.