Who directed valhalla rising?

Valhalla Rising is a 2009 English-language Danish period adventure film directed by Nicolas Winding Refn. Refn co-wrote the screenplay with Roy Jacobsen. The film stars Mads Mikkelsen and follows a Norse warrior named One-Eye and a boy as they travel with Christian Crusaders by ship in search of the Holy Land. While shot entirely in Scotland and set in the 12th century, the film only recouped about $731,613 of its $5.7 million production cost, though it received generally positive reviews. The title references Kenneth Anger's films Scorpio Rising and Lucifer Rising with a Viking theme.