The steamtrain for the celebration of 150 years of the line from (Berne-) Balliswil-Fribourg-Lausanne, pulled by four cylinder compound 2-10-0 C 5/6 # 2978 "Elephant", is crossing the 332 meter long and 78 meter high Grandfey viaduct over the Saane river, damed to the Schiffenen Lake, between Fribourg and Düdingen. In Switzerland this valley is called the "Röschtigraben", the "border" between German and French speaking part of Switzerland.