Spectacular Eruption at Yellowstone's Black Diamond Pool

On December 20, 2025, the Black Diamond Pool in Yellowstone National Park experienced a notable eruption, characterized by dramatic muddy plumes. This event was captured on an official camera operated by the U.S. Geological Survey (USGS), which described the eruption with the exclamation “Kablooey!” The eruption occurred at approximately 9:23 AM local time in Biscuit Basin, an area situated between the well-known Old Faithful geyser and the Grand Prismatic Spring.

The Guardian

Black Diamond Pool is one of many hydrothermal features in Yellowstone, which is home to over 10,000 such formations, including more than 500 geysers. The pool has a history of eruptions, with recent activity primarily being audible rather than visible due to nighttime occurrences or camera obstructions from ice. A significant hydrothermal explosion in July 2024 had previously sent rocks and mud flying hundreds of feet into the air, damaging nearby infrastructure and leading to the closure of the area.

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In response to the increased activity, researchers installed a new camera along with seismic and acoustic monitoring stations in the summer of 2025. These instruments, along with temperature sensors maintained by the Yellowstone National Park Geology Program, have enhanced the ability to detect and characterize eruptions. The successful capture of the recent eruption is attributed to these advancements in monitoring technology.

The Guardian

The eruptions at Black Diamond Pool, including the recent one, highlight the dynamic geological activity within Yellowstone National Park. Such events not only attract attention from the scientific community but also pose potential risks to visitors and infrastructure. The park's unique geothermal features, including hot springs and geysers, continue to be a focal point for both research and tourism.

The Guardian

The USGS expressed satisfaction with the clarity of the footage from the recent eruption, noting it as a prime example of the ongoing activity at Black Diamond Pool over the past 19 months. They emphasized the importance of continuous monitoring to better understand these hydrothermal phenomena.

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While the eruptions are a natural occurrence, there are concerns regarding visitor safety and the potential for damage to park facilities. Critics argue that increased monitoring and public awareness are essential to mitigate risks associated with such unpredictable geological events.

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• “We got a nice clear view of one of these dirty eruptions under bright blue skies with the surroundings covered in snow (ah, winter in Yellowstone!),” — USGS Volcanoes

The Guardian

The USGS and Yellowstone National Park officials will continue to monitor Black Diamond Pool closely, utilizing the newly installed technology to track future eruptions and ensure visitor safety.

The Guardian