Puca Glacier Close Up (image) University of Colorado at Boulder Share Print E-Mail Caption The Puca Glacier's name comes from the red color of the rocks on its eastern moraine (right side), since Puca is Quechua for 'red.' Terrain recently exposed by the glacier's retreat can be seen in the foreground, practically devoid of life. Because of the sediment's red color, we felt like we were on the surface of Mars during our fieldwork there. Credit John Darcy / University of Colorado Boulder Usage Restrictions None Share Print E-Mail 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.