The Secret Land ratings (Movie, 1948)

This documentary, filmed entirely by military photographers, recounts the U.S. Navy's 1946-47 expedition to Antarctica, known as Operation High Jump. The expedition was under the overall command of Admiral Richard E. Byrd, no stranger to the Antarctic. This was a large undertaking involving thirteen ships and over four thousand men. The fleet departed from Norfolk, Virginia traveling through the Panama Canal and then southward to their final destination. The trip through the ice pack was fraught with danger and forced the submarine that was part of the fleet to withdraw. The trip was a success meeting all of its scientific goals. The film is narrated by three Hollywood stars, all of whom served in the US Navy: Robert Taylor, Robert Montgomery and Van Heflin.