Rio San Juan (IMAGE) University of Texas at Austin Caption The Rio San Juan transports sediment from the High Andes (the most distant mountains in the photo) across the Precordillera mountain range (foreground). Credit Tomas Capaldi Usage Restrictions credit 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.