Kalabaka (The Secrets of Unknown Europe)
A reporter travelling in the Balkans is trying to gain a deeper understanding of the region, which is a melting pot of cultures, languages and religions.
- Year: 1928
- Country: Germany
- Genre: Documentary
- Studio: Fred Freiherr von Bohlen-Hegewald
- Keyword: silent film, adventurer
- Director: Fred von Bohlen
- Cast: Fred von Bohlen