Fairy Circles with Decaying Euphorbia (IMAGE) University of Göttingen Caption A decaying Euphorbia damarana shrub that was marked by G.K. Theron more than four decades ago. Many large grasses were growing around the metal pin. Credit S Getzin, University of Göttingen 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.