![Top Gear: Apocalypse (2010) Top Gear: Apocalypse (2010)](http://image.tmdb.org/t/p/w185/tjOk2zL8SVfZJMiVa1UK0VkTI5c.jpg)
![The Mystery Beneath (2015)](http://image.tmdb.org/t/p/w300/6xZolx8iZd8lwCBnJ0b0nHg9wOk.jpg)
Overview
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.