The "Schalke" diesellocomotive Gmf 234 # 02 "Engadin" is running along the Lago Bianco on the Bernina line on about 2250 meter a.s.l., pulling the new rail corridor dyagnosis car P # 10175 of the ARGE (syndicate) Sersa/INovitas/Kistler (former ciment silo car "Mohrenkopf" Uc # 8098, built by Josef Meyer/Rheinfelden and MBA/Dübendorf in 1964, sold to Sersa in 2014). The car is used on the entire RhB network this week and all lines are recorded with high-resolution, georeferenced 3D video (infra3DRail of INovitas). Above the train are new built massive snow protections and in the background 3246 meter high Piz Ot mountain in the Albula pass region, about 21 kilometer from here.