The Geology of Yellowstone: Past, Present and Future

The Yellowstone Caldera, formed 630,000 years ago, anchors America’s first national park, yet Yellowstone’s volcanic story stretches back 17 million years and continues today, notes volcanologist Kirt Kempter. He guides participants through the park’s geology, from unique rocks to hydrothermal features, using Google Earth views, diagrams, maps, and field photos to reveal how ongoing volcanic and geothermal forces shape Yellowstone’s dramatic landscape.