NewsWorld’s longest tunnel underneath sea, the world’s longest tunnel will go 40 meters beneath the ocean, preparations to attach 2 nations, automobiles and trains will run collectively – world’s longest highway and rail fehmarnbelt tunnel constructed underneath the baltic sea opens in 2029 – 2024-06-29 12:41:39 by times news cr June 29, 2024 by times news cr June 29, 20242024-06-29 12:41:39 Copenhagen: The world’s longest rail and highway tunnel, passing 40 meters beneath the Baltic … Read more 2 FacebookTwitterPinterestEmail