Archaeologists search a branch of the Mobile River for the sunken remains of the Clotilda, the last vessel to bring enslaved Africans to America.

PHOTOGRAPH BY ASHA STUART, NATIONAL GEOGRAPHIC

MOBILE, ALABAMAIt was one of the greatest unsolved crimes of the 19th century. Now a team of archaeologists is hunting for the smoking gun—the charred wreck of the Clotilda, the last slave ship to reach the United States before the outbreak of the Civil War. Read Full Article