 This injury recurred in 1993, which forced him into a wheelchair.The film was shot entirely on location in the Rocky Mountains, mostly at altitudes between 9,000 and 14,000 feet, north of Durango, Colorado near Purgatory and Molas Pass, the main location sites.The score for the film was composed and conducted by David Raksin, and incorporated the song "Oh Shenandoah" in its main title and end title.