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Most Important Structures in this Category

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  • updated entry (14 days)
# Name Country length
1 Päijänne Water Tunnel Finland 120000 m
2 Orange Fish Tunnel South Africa 82800 m
3 Gotthard Base Tunnel Switzerland 57091 m
4 Seikan Tunnel Japan 53850 m
5 Channel Tunnel United Kingdom 50450 m
6 Hálslón Headrace Tunnel Iceland 39700 m
7 Lötschberg Base Tunnel Switzerland 34576.6016 m
8 Guadarrama Tunnel Spain 28418.6600 m
9 Taihang Tunnel China 27848 m
10 Large Electron Positron Collider (LEP) Switzerland 27000 m

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Italy (1926), added on 21/08/2019

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Italy (2000), modified on 19/08/2019

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Italy (1926)
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Italy (1926)
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Italy (1998)
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