Filming took place on original locations in the USA, Germany and Austria. According to director Fritz Kalteis, the team had to contend with the most adverse conditions during the shoot on the Dachstein. On two days, they could hardly shoot at all because of the snowstorm. The danger of crevasses was also extremely high and utmost caution was required. But at least the weather was just like Ken Cichowicz experienced in 1985.