"Unraveling History's Top 15 Unsolved Mysteries"

Historical mysteries have puzzled researchers for centuries, from the disappearance of Cleopatra's tomb to the enigma of the Mary Celeste ship. Other mysteries include the missing rock layers in the Grand Canyon, the Salish Sea feet phenomenon, the colossal Olmec heads, the fate of explorers like Roald Amundsen and D.B. Cooper, the vanishing lighthouse keepers of Flannan Isle, the legend of King Arthur, and the lost colony of Roanoke.