Positive temperatures and heavy snow on the Vaser Valley mountains lead to avalanches that affects production trains.
The first production train was caught today in an avalanche while it was coming back to Viseu. Due to the big probability of happening this phenomenon near by there it was a tractor that came to help immediately. Also, in a few minutes a special train powered by diesel locomotive left CFF Viseu depot transporting a second tractor. The intervention is taking a long time since at site they are working for more than four hours.