Mountains on Fire (German: Berge in Flammen) is a 1931 German war film directed by Karl Hartl and Luis Trenker and starring Trenker, Lissy Arna and Luigi Serventi. The film was based on Luis Trenker's novel of the same title, partly based on his own experiences. Separate French and English-language productions were also made. One of the series of popular Mountain films of the era, it was shot on location in the Dolomites.
Luis Trenker, Karl Hartl