Archaeologists have made an unexpected discovery off the coast of Costa Rica: two XVIII-century Danish slave ships. The ships, named Fridericus Quartus and Christianus Quintus, sank in 1710, according to the National Museum of Denmark, and the wrecks now lie off Cahuita National Park.
Marine archaeologist Andreas Kallmeyer Bloch of the National Museum of Denmark during the underwater excavation in Costa Rica.
The Fridericus Quartus was set on fire, while the Christianus Quintus's anchor rope was cut and it sank. For many years, Costa Rican authorities assumed the ships were pirates. However, after finding yellow bricks on one of them, they linked them to bricks produced in Flensburg, Germany, for use in Denmark.
Marine archaeologist and research professor David Gregory of the National Museum of Denmark records and samples the yellow bricks. (Text and photos: RT)