Gustav Diessl
Dr. Johannes Krafft
The White Hell of Pitz Palu is a 1929 German silent mountain film co-directed by Arnold Fanck and G. W. Pabst and starring Leni Riefenstahl, Gustav Diessl, Ernst Petersen, and World War I pilot Ernst Udet. Written by Fanck and Ladislaus Vajda, the film is about a man who loses his wife in an avalanche while climbing the Piz Palü mountain, and spends the next few years searching the mountain alone for her body. Wikipedia