Director: Guillaume Jouvet. Voice-over (Archive): Steven Higley ; Journalist: Antonia Mey ; Voice-over (Scientific): Benjamin Bahr. Text: Antonia Mey, Guillaume Jouvet. Cinematic consultant: Bianca Violet.
In March 1926, four young men did not return from a mountain hike at the Aletsch Glacier. It was not until 2012 that their remains were found. This film explains how scientists reconstructed the accident of the mountaineers using a mathematical model, which describes the motion of the ice.