The eruptions began in early February. It’s unknown whether the eruptions will continue into the busy summer tourism season, ...

The geyser really came alive in fall 2017. From October 18 to November 10, 2017, Echinus consistently erupted roughly about ...

The largest acidic geyser in the world is erupting again at Yellowstone National Park after several years of dormancy, ...

Largest acidic geyser in the world has started erupting continuously after five years.

Echinus Geyser in Yellowstone National Park, a rare acidic geyser and the largest in the world, has recently been observed ...

The Echinus Geyser at Yellowstone National Park, which is the biggest acidic geyser on the planet, has been “wowing” visitors ...

Learn more about the Echinus Geyser at Yellowstone Park, which recently erupted, but may not sustain into the summer.

The Echinus Geyser had been silent for the last six years, and it is unknown whether the eruptions will continue into the ...

Echinus Geyser, the world’s largest acidic geyser, suddenly burst back to life in Yellowstone last month after being dormant for five years. Once called ...

Echinus is the largest known acidic geyser on Earth.

In early February 2026, repeated surges of the geyser began—as before, with the surface becoming agitated and releasing more ...

Whether this activity will persist through the summer months, allowing tourists to observe, remains uncertain.