Cinco días, un verano

Sir Sean Connery once described this movie's location work as "the most audacious piece of filmmaking I've ever been involved in. It was film production at the point of pioneering." Connery once recounted the worst moment he experienced while making this movie. Connery had to make a three hundred meter (three hundred twenty-eight yard) walk alone down a glacier known to be laden with crevasses hidden by a fresh snowfall and without safety markers. The marker poles were present during rehearsals, but were not there during filming, as they would be seen in the shot. Connery said, "Inches on either side of the path there were ninety foot caverns. I could hear the sound of ice moving underneath me, and behind me in the peaks, shifting all the time. That's the loneliest walk I've ever taken."

Fred Zinnemann edited 11 minutes from this film for its 1987 CBS television network premiere.

Referenced in El rey de la comedia (1982)