Diary of a rail fan in Kansai,Japan(Ver.2)

About world's rail news, general news, my train pictures, and travel diary)

Creative Commons License
This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License. クリエイティブ・コモンズ 表示 - 非営利 - 改変禁止 4.0 国際 ライセンスの下に提供されています。

List of my travel diary My train photoes The other contents

Why are those tunnels dangerous?

Can Norway win the global race to build a 'floating tunnel'?
https://edition.cnn.com/style/article/norway-underwater-floating-tunnel-intl/index.html

If this tunnel were to be built, there have to be a lot of evaluation tubes connected with ground level, and many shutters to minimize the damage in case of water leakage.
Otherwise, it would be dangerous to build the tunnels.