Sitting 300 feet below the Baltic Sea is a strange, circular object about 200 feet across in size, which some explorers say cancels out radio transmissions nearby, appears to have a staircase descending down a deep black hole, and appears to be made of metal.
The object certainly looks interesting, but what are its origins? Is it a crashed spaceship? A natural (but extremely unusual) geological formation? What is the Baltic Sea Anomaly?