Bombardier TRAXX F140 MS 186 # 497 of the Railpool Gmbh, Munich, rented to TR TransRail, is entering Airolo with the empy excavation train 67663 from Flüelen. Material produced during the construction of the second tube of the Gotthard road tunnel between Airolo and Göschenen is transported by rail to Flüelen, where it is deposited in Lake Uri (part of Vierwaldstätersee) to form shallow water zones. The cars are of type Sggrrs owned by VTG, consisting of two 4-axle units connected by a rod. The train has 8 of the double cars with a total of 64 axles and a capacity of about 1000 ton.