A group of treasure hunters discover a mysterious object at the bottom of the Baltic Sea in this documentary. Theories abound about the large object's origins. It might be a UFO, manmade, or it might be a naturally occurring phenomenon. Nobody knows.
Director
Status
Released
Original Language
EN
![The Mystery Beneath [Official Trailer]](https://img.youtube.com/vi/VrqRKCd2B4E/maxresdefault.jpg)
