Locator Map (IMAGE) University of Washington Caption The operations area at West Mata volcano during the 2009 expedition is part of the Lau Basin, bounded by Samoa, Tonga and Fiji. Credit NSF/NOAA Usage Restrictions Credit required 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.