Pirâmides

Everything suggests the pyramids were part of an underwater naval degaussing system installed during the Second World War, and not supports for anti-submarine nets. There are ten pyramids of about 1.5 m, spaced roughly every 2 m, with large mooring blocks at the ends of the line. At the top of each one is a hole where a copper rod was fitted, and these rods held four copper wires about 30 m long. The cables, interspersed with lead plates, were removed by divers in 1973. Today the structures are covered in algae and corals and are home to rich marine life.