New hydrothermal feature near "Tree Island" in Norris Geyser Basin, Yellowstone National Park

View looking northwest at a new thermal pool in the Porcelain Basin area of Norris Geyser Basin, Yellowstone National Park, that probably formed in a series of mildly explosive events between late December 2024 and early February 2025.  The rocks and white material (silica mud) surrounding the pool were probably ejected as the feature formed.  The pool is about 4 meters (13 feet) across.  U.S. Geological Survey photo by Mike Poland, May 12, 2025.