The 60m-tall structure was found underwater between the islands of Sao Miguel and Tercira. Its base measures 8,000 SQM - bigger than a football field - and Silva believes it was man-made. He says his find may be a remnant of the legendary lost world of Atlantis, which sank into the ocean after a failed attempt to invade Athens. The legendary Atlantis, was most famusly mentioned by the Greek philosopher, Plato in his dialogues Timaeus and Critias.
According to Plato, Atlantis was a naval power lying “across the Pillars of Hercules” that conquered many parts of Western Europe and Africa 9,000 years before the time of the legendary Athenian lawgiver Solon, i.e. in the 10th millennium BC. After a failed attempt to invade Athens, Atlantis sank into the ocean “in a single day and night of misfortune".
From as far back as Plato it was suggested the original builders of the pyramids lived west of Gibraltar, but findings of Machu Picchu, and other curiosities led people to believe it was on the other side of the Atlantic.
The sailor that made the discovery said that at first he couldn't believe what he had discovered and for some time he kept the secret for him self. With is boat sonar, we has able to measure the size of the pyramid, located about 40meters from the water surface. (you can watch it on the video below)