Yellowstone's geysers erupt from superheated water

Yellowstone National Park, home to half the world's geysers, sits atop a volcanic hotspot. Deep underground, magma heats groundwater to over 200 degrees Celsius. Immense pressure keeps this superheated water liquid until it finds narrow channels to the surface. When pressure releases, the water flashes into steam, propelling boiling jets skyward in dramatic geyser eruptions like Old Faithful, which shoots water 180 feet high. This incredible phenomenon offers a direct look at Earth's powerful inner heat and dynamic geology.