The last ice core (IMAGE) University of Copenhagen - Faculty of Science Caption The last ice core contained mud from under the ice sheet. Photo: Sepp Kipfstuhl, EGRIP Credit Photo: Sepp Kipfstuhl, EGRIP Usage Restrictions Use in context of this research, proper credit given 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.