River Hayle, Cornwall, UK (IMAGE) University of Exeter Caption The River Hayle in Cornwall, UK, is known as a 'metal river' as it contains significantly elevated levels of metal contaminants. Credit Josie Paris 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.