Devils Tower National Monument, Wyoming Mount Rushmore National Memorial, South Dakota, USA Lava bubble bursting through crust of active lava lake Explosive Vulcanian eruption of lava on Sakurajima Volcano, Japan Grand Geyser erupting, Upper Geyser Basin geothermal area, Yellowstone National Park Grand Prismatic Spring, Yellowstone National Park, Wyoming Chromatic Pool Hot Spring, Yellowstone National Park, Wyoming Paliorema sulfur mine and processing facility, Milos Island, Greece Kleftiko arch, Milos Island, Greece Lava flowing into Valle del Bove at Mount Etna Volcano, Italy Lava lake in pit crater, Nyiragongo Volcano, Democratic Republic of Congo Mount Rushmore National Memorial, South Dakota, USA Eruption of Strokkur Geysir, Iceland Incandescent rockfall of glowing lava down flank of Shiveluch Volcano