While searching for Cleopatra's lost tomb near Taposiris Magna, archaeologist and Nat Geo Explorer Dr. Kathleen Martínez and her team made a groundbreaking discovery that could bring them one step closer to solving the mystery—colossal structures and a polished floor beneath the waves that suggest the site was once an ancient port. #CleopatrasFinalSecret is now streaming on Disney and Hulu. | National Geographic Science