The movie is based on the novel "Olesya" (1898) by the Russian writer Aleksandr Kuprin and the story originally takes place in Southern Russia. Also, the leading role is played by the French actress of the Russian origin, Marina Vladimirovna (hence Marina Vladi as her screen name) Polyakova-Baidarova. Obviously, Russian literature could be a good source of dramatic material for the movie-making industry. And paradoxically, it is probably the most valuable resource (more valuable than oil or even gold) that could be obtained for free. It is free of copyright restrictions (for the most part) and is easy to find on the Internet.