22.12.2025

"Mud Eruption at Yellowstone's Black Diamond Pool!"

“Kablooey!” That’s the word U

The U.S. Geological Survey (USGS) recently described a spectacular event at Black Diamond Pool in Yellowstone National Park, using the term "Kablooey" to characterize a significant muddy eruption that took place on Saturday morning. This eruption, which occurred at approximately 9:23 a.m., was captured on video and shows mud being propelled upwards and outwards from the pool, located in the Biscuit Basin area, which is situated between two well-known park landmarks, Old Faithful and Grand Prismatic.

This latest eruption differs from other recent occurrences at Black Diamond Pool, which have primarily been heard rather than seen, as many took place at night or were obscured by ice. The Black Diamond Pool has gained notoriety over the past 19 months, being the site of multiple dirty eruptions, with the most notable hydrothermal explosion taking place in July 2024. That event launched rocks and mud hundreds of feet into the air and resulted in damage to a nearby boardwalk, leading to the closure of the area to park visitors due to safety concerns.

Since the July 2024 explosion, dirty eruptions at the Black Diamond Pool have been sporadic but have reached heights of up to 40 feet (approximately 12 meters). In response to these phenomena, researchers deployed new monitoring equipment this summer, including a camera, as well as seismic and acoustic monitoring stations. These tools, along with temperature sensors managed by the Yellowstone National Park Geology Program, are expected to enhance the ability to detect and analyze the eruptions more effectively.

The Yellowstone Volcano Observatory's webcam at Black Diamond Pool provided a remarkable view of the recent eruption under clear blue skies, where the winter landscape was blanketed in snow. This visibility marked a departure from previous eruptions' obscured perspectives, providing an insightful look into the phenomenon. USGS Volcanoes noted on social media that this event showcased the continued activity occurring at the site over the past year and a half.

While experts study these eruptions, they acknowledge that there is currently no discernible pattern or precursors to these events. This randomness adds an element of unpredictability to the eruptive activity at Black Diamond Pool. Yellowstone National Park is renowned for its diverse array of hydrothermal features, boasting over 10,000 in total, including more than 500 geysers, making it home to one of the most extraordinary geothermal collections on Earth.

The recent developments at Black Diamond Pool serve as a reminder of Yellowstone's dynamic geological landscape. As scientists continue to monitor and investigate these eruptions, they strive to deepen their understanding of the park's volcanic activity and the underlying geological processes at play.