phreatic-overgrowth-on-speleothems-from-vallgornera-cave.jpeg (IMAGE) University of South Florida Caption Phreatic overgrowth can be observed on speleothems within the Vallgornera Cave in Mallorca, Spain. Credit University of South Florida Usage Restrictions NA License Original 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.