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Pyrrhotine, BLS railway tunnel (Bern-Lötschtal-Simplon), Mittalgraben, Lötschental, Valais, Switzerland. Fov about 3 mm. Collectio… | Mineralien, Fossilien, Fossil
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Figure 24 | Minimizing the use of concrete in tunnels and caverns: comparing NATM and NMT | SpringerLink
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Widespread surface subsidence measured with satellite SAR interferometry in the Swiss alpine range associated with the construction of the Gotthard Base Tunnel - ScienceDirect
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Datei:Parc d'Attractions du Châtelard, Schweiz. Dampflok "Liseli" kreuzt Zug mit Akku Lok Nr. 7.jpg – Wikipedia
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