Covering an area of 1.5 square kilometers and containing 3.5 million cubic meters of sand , Rabjerg Mile is the largest migratory dune in northern Europe . Denmark 's Rabjerg Mile is the largest migratory dune in northern Europe . Comment: The area doubled as a desert in 1915 silent film `` The Secret of the Sphinx ''
Denmark 's Rabjerg Mile is the largest migratory dune in northern Europe . Comment: The area doubled as a desert in 1915 silent film `` The Secret of the Sphinx ''