Rock Sample PRR50489 (IMAGE) University of California - Santa Cruz Caption Sample PRR50489 is 3 centimeters thick and was found at Elephant Moraine in the Transantarctic Mountains. Credit Gavin Piccione Usage Restrictions For use only with news coverage of this research 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.