GPS Division students (left to right, foreground) Rowena Lohman, Adam Showman, Slawek Tulaczyk, and Lupei Zhu hike amid sulfurous fumes to cross the frozen lava lake on the floor of Kilauea caldera. This hike is part of the annual Project Pahoehoe field trip organized by the GPS Division for graduating seniors and graduate students to explore the volcanic landforms and processes on the island of Hawaii.

Photo courtesy of Albert Haldeman.