Most Important Structures in this Category
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| # | Name | Country | length |
|---|---|---|---|
| 1 | Gleinalm Tunnel | Austria | 8100 m |
| 2 | Liefkenshoek Rail Tunnel | Belgium | 5979 m |
| 3 | Tunnel Masserberg | Germany | 1051 m |
| 4 | Rehberg Tunnel | Germany | 602 m |
| 5 | Saint Nicolas Tunnel | Canada | 500 m |
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