Diving Into the Unknown (2016)

After a terrible accident deep inside an underwater cave, the survivors are forced to risk their own lives to bring the bodies of their friends home.

Release: 2016

Genres: Documentary

Director: Juan Reina

Actors: Patrik Grönqvist, Kai Känkänen, Sami Paakkarinen, Vesa Rantanen

IMDB: 7.0