An Ancient Fingerprint Among Clues to a 2,000-year-old Invasion of Denmark

Scientists analyzing a 2,000-year-old boat found in a Danish bog discovered new clues about ancient invaders who attacked the island of Als. The boat's caulking contained pine pitch, suggesting the attackers traveled hundreds of miles from Baltic Sea regions like Poland or Sweden, since Denmark lacked pine forests then. They discovered a human fingerprint preserved in the caulking material, providing a direct connection to these ancient seafarers and evidence of organized warfare centuries before the Viking era.