Forest in the San Juan range (IMAGE) University of Colorado at Boulder Caption A forest in the San Juan range of the Rocky Mountains, with dead Engelmann spruce trees alongside live aspen trees. Credit Robert Andrus 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.