Descending up to 40 meters beneath the Baltic Sea, the world's longest immersed tunnel will link Denmark and Germany, slashing journey times between the two countries when it opens in 2029.
원문출처 : https://www.cnn.com/travel/article/fehmarnbelt-longest-immersed-tunnel-cmd/index.html
원문출처 : https://www.cnn.com/travel/article/fehmarnbelt-longest-immersed-tunnel-cmd/index.html