The brenner base tunnel

Periadriatic Line Where the Southern and Eastern Alps divide A particular challenge for the construction of the Brenner Base Tunnel is t he Periadriatic fault zone. At a total length of 700 kilometres, it is the most significant tectonic fault line in the Alps. It crosses the tunnel axis at Mules with a width of about 700 metres. The Pe- riadriatic fault zone separates the Southern Alps from the Eastern Alps. Mules GERMANY SWITZERLAND ITALY SLOVENIA AUSTRIA Bern Zürich Vaduz Innsbruck Torino Milano Verona Trento Merano Fortezza Bolzano Udine Ljubljana München Klagenfurt Periadriatic fault zone Periadriatic fault zone Periadriatic fault zone Venntal drilling campaign (2015) 30 BRENNER BASE TUNNEL