Yellowstone - 15 of 26
Yellowstone FAQs - 26 Found
No. The volcanic system in Yellowstone National Park is displaying the same general types of restless activity today as it has since volcanic activity was first analyzed more than 50 years ago. Current behavior includes extensive seismicity, periods of uplift and subsidence of the caldera related to the movements of hydrothermal fluids that are produced and maintained by deeper magma beneath the Park, and intermittent changes to hydrothermal features at the surface.