 The film has elements drawn from the history of the supposed first conquest of the summit of Cerro Torre in 1959, by the Italian climber Cesare Maestri and his partner, the Austrian Toni Egger, who died during the descent.NSB El 1

NSB El 1 is the first electric locomotive series used by the Norwegian State Railways, from 1922 until 1973.Twenty-four engines were delivered from ASEA and Thune, twenty-two in 1922 and two in 1930.