image

The drilling head of the tunnel drilling machine used during the tunneling of the Gotthard Base Tunnel in Pollegio in the Leventina valley in the Canton of Ticino, Switzerland, photographed on the June 16, 2016. The drilling head is located next to the Swiss Federal Railway's operations center in Pollogio. (KEYSTONE/Christian Beutler) Der Bohrkopf der Tunnelbohrmaschine, die beim Gotthard Basistunnel Tunnelbau verwendet wurde, in Pollegio in der Leventina im Kanton Tessin am 15. Juni 2016. Der Bohrkopf befindet sich neben der SBB Betriebszentrale. (KEYSTONE/Christian Beutler)