According to Liam Neeson's account, the temperatures were as low as -40 degrees Celsius (-40 degrees Fahrenheit) in Smithers, British Columbia, where the film was shot. The snow storms/scenes were actual prevailing weather conditions, and not a cinematic illusion produced with CGI (interview: The Tonight Show with Jay Leno: Episode #20.70 (2012)). The cast wore thermals under their costumes for additional protection.

Film

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