2 days ago · The largest acidic geyser in the world is erupting again at Yellowstone National Park after several years of dormancy, according to the U.S. Geological Survey.

2 days ago · Echinus is a rare acidic geyser. Temperature is measured in the outlet channel that carries much of the erupted water. Rapid temperature increases in geyser outlet channels typically reflect …

2 days ago · The world's largest acidic geyser is putting on a show again, erupting for the first time in six years after a quiet hiatus, officials at Yellowstone National Park say.

3 hours ago · In the last few days at the start of March 2026, however, the spotlight has moved to another region of the basin, where Echinus Geyser, a rare acidic geyser, has started erupting for the …

1 day ago · Yellowstone’s Echinus Geyser—the largest acidic geyser on Earth—is putting on a show with a rare and spectacular reawakening. Located in the Back Basin of the Norris Geyser Basin, the …

1 day ago · The world's largest acidic geyser has begun erupting again in Yellowstone after slumbering for over five years, the national park said Monday. Echinus Geyser, located in the back basin of the ...

1 day ago · Yellowstone is one of the most popular national parks in the world, welcoming millions of visitors every year. This protected area is home to the stunning Yellowstone Grand Canyon, boiling …

1 day ago · Echinus Geyser in Yellowstone’s Norris Geyser Basin began erupting again on Feb. 7, 2026, producing dozens of bursts through February after nearly six years of dormancy and drawing …

7 hours ago · That is exactly what has happened at Echinus Geyser, the world’s largest acidic geyser, which has erupted again after nearly six years of relative silence.

20 hours ago · Waking from a six-year slumber, the Echinus Geyser, the world's largest acidic geyser, has roared back to life in Yellowstone National Park. After remaining dormant since 2020, the Norris …