Polluted stream (IMAGE) University of California - Santa Cruz Caption Leviathan Creek below an abandoned open pit mine, an EPA Superfund site in the Sierra Nevada, where iron oxide deposits coat the stream bottom. Credit David Herbst Usage Restrictions For use only with news coverage of this research 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.