US: Violent Hydrothermal Eruption Explodes At Yellowstone Black Diamond Pool.

Yellowstone National Park, United States - April 29, 2026 A fixed USGS Volcanoes webcam captured a sudden hydrothermal eruption at Black Diamond Pool in Biscuit Basin, Yellowstone National Park, turning a calm geothermal scene into a violent explosion of steam, water, and debris. At first, the footage shows a quiet light-gray pool gently steaming and rippling under a partly cloudy sky. The surrounding landscape appears still, with barren geothermal ground and distant forested hills. Without warning, a powerful burst erupts from the center of the pool. A thick, dark column of muddy water, steam, and debris shoots upward and surges directly toward the camera, rapidly filling the frame. For several seconds, the plume completely engulfs the view in dense gray steam and spray. As it clears, the pool is revealed to be violently churning, with muddy water bubbling and splashing while steam continues to rise heavily across the basin. Posted with the caption “And another one!”, the eruption occurred on Wednesday, April 29, 2026, at about 12:28 PM MDT. USGS stated it was larger than the previous day’s event and likely the most powerful since a major hydrothermal explosion at the same pool on July 23, 2024, which destroyed the boardwalk and sent rocks and mud hundreds of feet into the air. The camera used in the recording sits on a remaining section of that damaged boardwalk, with the eruption plume directed straight toward it. Authorities note ongoing hydrothermal hazards in the area. The basin remains closed to visitors, and the webcam was installed specifically to monitor the unstable feature. Local outlets, including WRBL, quickly circulated the footage as another striking example of Yellowstone’s unpredictable geothermal activity.