Results for Geology
The first base tunnel
Long before the Gotthard and Lötschberg, the first base tunnel in Swiss rail history is driven through the hills at Hauenstein near Olten.
View eventWork begins
The NRLA is far more than just the Gotthard Base Tunnel, but the first exploratory boring for the NRLA project takes place at the Gotthard.
View eventGeology and surveying
Tunnel construction depends on scientific knowledge. Geology helps to find ways through the rock.
View eventTraversing the Piora Basin
The Piora Basin, with its sugar-grain rock, threatens to endanger construction of the Gotthard Base Tunnel.
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