umelecký pochúťka Ak môžeš mini tunnel Switzerland akonáhle populárne štít
Gotthard Base Tunnel - Wikipedia
Gotthard-Ticker - der Tunnel ist eröffnet | Handelszeitung
Water supply and water drainage system of the Gotthard Base Tunnel including a mini power plant: a complex, multipurpose scheme to ensure operational requirement and requirements in case of accident - ITA
Lötschberg plans for long-term water inflow repair
PDF) [78] How Tunnels Work (6H) (1) (1) | Mauro Valle - Academia.edu