The McMurdo Dry Valleys (IMAGE) University of Colorado at Boulder Caption The dry valleys of Antarctica form the coldest, driest, and windiest ecosystems known. Credit Michael Gooseff/CU Boulder Usage Restrictions Use with credit License Original 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.