Lotschberg Alpine railway tunnels, Switzerland, 2007
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Geology of the Lotschberg base tunnel, and the original tunnel, over-deepened glaciated valley of Gasterntal, the 1908 tunnel disaster, Klus Gorge, Gotthard tunnel.
Geology of the Lotschberg base tunnel, and the original tunnel, over-deepened glaciated valley of Gasterntal, the 1908 tunnel disaster, Klus Gorge, Gotthard tunnel.