Roger Donaldson said one of the most difficult days of filming was when he filmed the brothel scene. The scene called for the women to be walking around wearing only garters. However, Donaldson said that when he went to film the scene he discovered that most of the women shaved their genitals, which would have been anachronistic for 1971. So the actresses had to wear pubic wigs called "merkins." This caused a problem because the merkins were hard to secure in place and kept slipping, causing Donaldson much aggravation.
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