Ice Rubble Formation 2 (IMAGE) Aalto University Caption Strong winds and currents powerfully push ice across vast distances, resulting in large ridges reaching tens of metres in height. Credit Janne Ranta/Aalto University 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.