Scientists Stunned as Mysterious Underwater Structure Discovered Off Coast of Chile In a groundbreaking discovery, a team of researchers has identified a large, unexplained underwater structure off the coast of Chile. The finding has left the scientific community abuzz, with many speculating about the origin and purpose of the mysterious formation. Located at a depth of approximately 1,500 feet, the structure is estimated to be around 1,000 feet in length and appears to be a man-made creation. As experts begin to analyze the data and footage from the discovery, questions are being raised about the potential implications of this find on our understanding of human history and the ocean's secrets.