Conceptual cross-section view of Yellowstone Lake geothermal dynamics

Millions of visitors marvel at Yellowstones colorful pools, bubbling springs, and steaming geysers. What they may not appreciate is that these features are just a small part of a larger-scale geothermally active system that extends under the entire northern half of Yellowstone Lake. (Illustration by Eric S. Taylor, © Woods Hole Oceanographic Institution)