Per Holmberg and the Rök Runestone (IMAGE) University of Gothenburg Caption This is Per Holmberg, researcher at University of Gothenburg with the Rök Runestone. Credit University of Gothenburg Usage Restrictions None 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.