Coring Operation at Crveni Potok, Serbia. (IMAGE) Proceedings of the National Academy of Sciences Caption This is a coring operation at Crveni Potok, Serbia. From left to right: Srdjan Bojovic (University of Belgrade), Walter Finsinger (Institut des Sciences de l'Evolution de Montpellier), and Benoit Brossier (Institut des Sciences de l'Evolution de Montpellier). Credit PNAS 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.