Faido-Sedrun East Tunnel Breakthrough at 2:17p, on October 15th, 2010. Image Source: Image Source: Herrenknecht.com 27 February 2013 By Michele Petrello Etter Faido-Sedrun East Tunnel Breakthrough at 2:17p, on October 15th, 2010. Image Source: Image Source: Herrenknecht.com