"In 1976, Captain Don Henry was 40 miles off the southern coast of Florida directing sonar soundings of the ocean floor. Suddenly an immense pyramid-shaped structure showed up. It was 300 feet below the surface. Subsequent underwater closed-circuit TV was to show the pyramid to be about 420 feet high - a veritable skyscraper, nearly the size of the great pyramids of Egypt."
 "Dead Men's Secrets", pg 149, Jonathan Gray (2004)