Research vessel Polarstern (IMAGE) Max Planck Institute for Marine Microbiology Caption Research vessel Polarstern on expedition PS86 in the Greenland ice, approximately 4000 m above the Western Vulcanic Zone of Gakkel Ridge. Credit Alfred Wegener Institute / Stefanie Arndt Usage Restrictions Only to be used in the context of this publication and citing the correct copyright. 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.