nicolasOK, the producers of "National Treasure: Book of Secrets" took a few liberties with the Black Hills geography. But it's still a great movie, and Keystone was proud to host the cast and crew during filiming in 2007. The film starred Nicolas Cage, Jon Voight, Helen Mirren and Diane Kruger, and the stars were spotted at coffee shops and visitor attractions all around the region. 

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