Birch Bark Tar (IMAGE) University of Bristol Caption The amorphous lump of birch bark tar found in in the child burial, contained within a bag hanging from a belt at her waist. Credit Oxford Archaeology East Usage Restrictions Single use only - for use with press release License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.