Geophysicist Phil Wannamaker (IMAGE) University of Utah Caption Geophysicist Phil Wannamaker, of the Energy & Geoscience Institute at the University of Utah, stands in the foothills above the campus. Wannamaker conceived and co-authored a new study providing the clearest look yet at the underground system that generates molten rock where two of Earth's tectonic plates collide, then sends it upward to the magma chamber beneath 14,410-foot Mount Rainier, the tallest volcano in the Cascade Range and in Washington state. Credit Nick Steffens, University of Utah Marketing and 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.