Where is the rock laboratory located?

The Mont Terri rock laboratory is situated to the north of St-Ursanne in the canton of Jura, around 300 m underground. It is accessed via the safety gallery of the Mont Terri motorway tunnel.

Geographic location of the rock laboratory.
Depiction at three zoom levels: at the left, position of St-Ursanne and the motorway tunnel on the map of Switzerland; in the middle, position of the laboratory within the tunnel; at the right, layout of the laboratory.

The Mont Terri rock laboratory is located in St-Ursanne in the Clos du Doubs region. The last chain of the “Faltenjura” (Folded Jura) range is traversed by the Mont Terri motorway tunnel and stretches into the Ajoie region to the district capital, Porrentruy. Access to the rock laboratory is via the safety gallery of the motorway tunnel.

Aerial view of Mont Terri, with motorway tunnel and rock laboratory
Aerial view of Mont Terri, with motorway tunnel and rock laboratory. The red arrow shows the approximate location of the rock laboratory.

The map is showing where the office and the visitor center are located.