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Experts Discover Over 86,000 Earthquakes Hiding Underneath Yellowstone Volcano — Thanks to AI

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Published Aug. 17 2025, 12:45 p.m. ET

Tourists are admiring the beauty of Yellowstone National Park's hot spring during a boardwalk. (Representative Cover Image Source: Getty Images | Eric1513)
Source: Representative Cover Image Source: Getty Images | Eric1513

Tourists are admiring the beauty of Yellowstone National Park's hot spring during a boardwalk.

Although millions of tourists visit the Yellowstone National Park each year, the ground beneath their feet hides a secret that often goes unnoticed unless the visitor is an eagle-eyed scientist. It carries fire within its belly. Deep within the grounds of its central-western portion, a 34 by 45-mile magma chamber sits, per SciShow. But a recent study published in the journal Science Advances has uncovered yet another mystery that lurks inside this belly of Yellowstone caldera - over 86,000 earthquakes hidden in the cracks and crevices of this monstrous volcano.

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Source: Representative Image Source: Getty Images | Alexkane

Crater of Yellowstone supervolcano

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Noting in the study, scientists report that the Yellowstone volcano is one of the most seismically active volcanoes on the planet. Bordered by a ring formed by volcanic eruptions nearly 2 million years ago, the volcano sits in a giant crater inside the Yellowstone National Park, promising a potential destructive explosion that could send volleys of nearly 350 miles of ash and dust into the air to cover an entire island.

In this research, scientists employed machine learning to discover that the volcanic belly endured around 86,276 eruption events between 2008 and 2022. Using artificial intelligence, the team studied both the tectonic and magmatic composition of this volcano to extract nearly 15 years of seismic data, which unleashed the stunning mystery.

Earthquake swarms, according to a press release, are “groups of small, interconnected earthquakes that spread and shift within a relatively small area over a relatively short period of time.” 

Beneath the grounds of the Yellowstone volcano, they noticed fault lines, likely carved by the interplay between slowly diffusing aqueous fluids and rapid episodic fluid injections, a dance that ultimately triggered these quakes. The team believes that the mysterious earthquakes discovered in Yellowstone’s volcanic underworld were likely triggered by fluid mechanics rather than typical seismic triggers. The churning of liquid underneath the ground likely stirred the magma chamber, which led to these tremors and, therefore, fault lines.

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