Harald Reinl was an Austrian film director. He is known for the films he made based on Edgar Wallace and Karl May books and also made mountain films, Heimatfilms, German war films and entries in such popular German film series as Dr. Mabuse, Jerry Cotton and Kommissar X. His directing output includes more than 60 titles. With his Edgar Wallace and Karl May adaptations, Reinl advanced to become one of the most successful directors in German cinema in the 1960s: with the four Karl May films he made between 1962 and 1965 alone, Reinl reached 32 million viewers.

Tiefland ("Lowlands") is a 1954 West German opera drama film directed, produced, co-written, edited by and starring Leni Riefenstahl, and based on the 1903 eponymous opera composed by Eugen d'Albert to a libretto by Rudolph Lothar based on the 1896 Catalan play Terra baixa by Àngel Guimerà. The film co-stars Bernhard Minetti, and is Riefenstahl's last feature film as both director and lead actress.