Excavated Nok Vessels (IMAGE) University of Bristol Caption Excavated Nok vessels are cleaned and photographed at the Janjala research station, shown in the picture: Dr Gabriele Franke, Goethe University. Credit Peter Breunig Usage Restrictions Single use only - 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.