This sonar image created by SEARCH Inc. and released by the Alabama Historical Commission shows the remains of the Clotilda, the last known U.S. ship involved in the trans-Atlantic slave trade. Researchers studying the wreckage have made the surprising discovery that most of the wooden schooner remains intact in a river near Mobile, Ala. including the pen that was used to imprison African captives during the brutal journey across the Atlantic Ocean. (Alabama Historical Commission via AP)
BIRMINGHAM, Ala. (AP) — Researchers studying the wreckage of the last U.S. slave ship, buried in mud on the Alabama coast since it was scuttled in 1860, have made the…