Brad Singer at Laguna del Maule (IMAGE) University of Wisconsin-Madison Caption Brad Singer, a University of Wisconsin-Madison professor of geoscience, inspects a densely-fractured lava flow that cooled rapidly against ice, at Laguna del Maule, Chile. Singer is leading a five-year effort to understand the geology of a volcanic field that has erupted at least 36 times during the last 25,000 years, and that is now experiencing significant uplift due to magma intrusion. Credit David Tenenbaum/University Communications Usage Restrictions None 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.