Another hydrothermal explosion at Black Diamond Pool in Yellowstone National Park! The newest event happened on the morning of Dec. 20, 2025. It’s the latest blast of many that have happened sporadically at the site ever since a giant hydrothermal explosion shot rocks and mud several hundred feet into the air in July of 2024, destroying a boardwalk. The area, known as Biscuit Basin, has been closed to visitors since then because of the potential hazard. Scientists with USGS Yellowstone Volcano O

"RUN, RUN, RUN!" A surprise eruption at Yellowstone National Park sent tourists fleeing for cover as steam, water and debris shot high into the air and prompted the closure of an area containing several geysers. The hydrothermal explosion damaged the boardwalk, but there were no reports of injury, according to the U.S. Geological Survey. | ABC7