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The film's working title was The Rock Bottom. The Hollywood Reporter review notes that the film was inspired by the 1949 Kathy Fiscus case, in which a three-year-old Los Angeles girl fell down a well. Rescue efforts were reported live by local television stations and captured the attention of the nation's news media. Millions of viewers eagerly awaited the outcome. After three days, the child was found dead, apparently having died a couple of hours after she fell. Production notes add the following information about the production: The crew spent a week on location near Mt. Waterman in the Angeles National Forest outside Los Angeles, CA, and some scenes were filmed at Lone Pine, CA. Ten members of the Sierra Club appear in the film as themselves and are interviewed by radio and television announcer Bill Welsh, who had reported on the Fiscus case.