Schweiz, Gotthard Basistunnel. Unterseite der Tunnelbohrmaschine "Sissi" von Herrenknecht.. Der Gotthard Tunnel wird der laengste Tunnel der Welt, Tunnelbau, Europa, 2010; QF; ..Switzerland. Gotthard Base Tunnel. Underpart of the tunnel boring machine "Sissi" of Herrenknecht. The Gotthard tunnel will be the longest tunnel in the world...(Bildtechnik: sRGB, .72.87 MByte vorhanden) (KEYSTONE/LAIF/Berthold Steinhilber)
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