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Yellowstone's largest acidic geyser awakens after 5 years

Echinus Geyser has erupted every 2–5 hours since mid-February, with eruptions lasting 2–3 minutes and reaching 20–30 feet, according to the U.S. Geological Survey.

  • On Feb. 16, Yellowstone's Echinus Geyser resumed frequent eruptions every two to five hours, lasting two to three minutes and reaching 20 to 30 feet, the U.S. Geological Survey said.
  • In early February, the geyser pool in Norris Geyser Basin became agitated and released more water before eruptions began, USGS reported.
  • Records show in the 1970s, Echinus erupted every 40 to 80 minutes, and in the 1980s–1990s, eruptions sometimes lasted more than 90 minutes, with recent activity in 2017 and December 2020.
  • Park managers and scientists question whether Echinus Geyser's eruptions will continue into the summer, as Poland wrote, 'It's probably not too likely given the geyser's tendency to wake up for a month or two before going back to sleep, and there were no eruptions during the last few days of February, so it might already have gone quiet' in the USGS blog post.
  • USGS noted the pattern resembles 2017 as the geyser erupted on Feb. 7, followed by three more eruptions over the following days.
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Geyser Echinus, located in the catchment area of the Geyser Norris Basin in Yellowstone, erupted during February after being inactive for five years.The trend is expected to decrease during the summer.What the authorities said about the phenomenon in Yellowstone According to a statement presented by the United States Geological Service (USGS), there were repeated eruptions in early February.The first occurred on the seven, with the surface shaki…

·Buenos Aires, Argentina
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Yellowstone's largest acidic geyser awakens after 5 years

A long-dormant Yellowstone geyser – the largest acidic geyser in the world – recently started erupting again. (MA Bellingham via USGS)

·Sacramento, United States
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For the first time since 2020, early spring visitors to the US's Yellowstone National Park were able to see the Echinus Geyser erupt. The US Geological Survey reported on its February activity on Monday.

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Krem2 News broke the news in Spokane, United States on Thursday, March 5, 2026.
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