Pilbara (IMAGE) University of New South Wales Caption Ridges in the ancient Dresser Formation in the Pilbara Craton of Western Australia that preserve ancient stromatolites and hot spring deposits. Credit Image: Kathleen Campbell Usage Restrictions With appropriate credit and caption 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.