Simpson Lagoon (IMAGE) University of Texas at Austin Caption Emily Bristol samples groundwater through a piezometer in Simpson Lagoon. Credit Credit: Tyson McKinney/Jackson School of Geosciences Usage Restrictions Please credit image 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.