The world's largest acidic geyser has begun erupting again in Yellowstone after slumbering for over five years, the national ...

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

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

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

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

The world’s largest acidic geyser has erupted in Yellowstone National Park after remaining largely dormant since 2017. The ...

The ground at Yellowstone does not always move quietly, and sometimes it waits for years before suddenly coming back to life.

A crowd gathers to watch Steamboat Geyser on Sept. 17, 2018 in Yellowstone National Park. The geyser's June 15 eruption came just over three days after the previous one, a new record. Steamboat sat ...

Yellowstone’s Echinus Geyser awakens after years of dormancy, offering rare eruptions and unforgettable experiences for ...

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