Colorado Sled (image) University of Washington Share Print E-Mail Caption Researchers tow their equipment with sleds to reach a Colorado study site. Credit C. Dang / Univ. of Washington Usage Restrictions With credit. 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.