Muddy Eruption at Yellowstone’s Black Diamond Pool Captured on Video

This image made from video provided by the United States Geological Survey (USGS) shows a muddy eruption at Black Diamond Pool in Yellowstone National Park on Saturday, Dec. 20, 2025. U.S. Geological Survey via AP

“Kablooey!”

That’s the word U.S. Geological Survey volcanic experts used to describe a muddy eruption at Black Diamond Pool in Yellowstone National Park on Saturday morning.