The Mystery Beneath (2015)

Treasure hunters Peter and Dennis were out on a typical day exploring the Baltic Sea when a very unusual image appears on the sonar. A nearly 200 foot cylindrical object was something that had never been seen before. This documentary takes you on the extraordinary journey to find out what the object could be. Reviewed by multiple disciplines of scientists, and using advanced equipment, discover what very well may be an ancient crash site from an advanced civilization millions of years ago.