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Yellowstone: World's largest acidic geyser erupts for first time since 2020
- Resuming eruptions, Echinus Geyser at Yellowstone National Park, erupted on Feb. 7 and again from Feb. 16, after six years of dormancy.
- USGS and park data show rapid temperature spikes in the outlet channel, linked to natural hydrothermal shifts resembling 2017, park scientists said.
- Temperature records show eruptions repeat every two to five hours, lasting about two to three minutes, with surges at 104°F and eruptions near 158°F in a 66-foot pool rimmed by red spiny silica formations.
- Scientists can monitor Echinus in near real time using Yellowstone Volcano Observatory temperature graphs, while park officials warned visitors that water can reach 200°F and said eruptions are unlikely to continue into the busy summer tourist season.
- Historically, Echinus had sporadic eruptions in 2010–2011 before a fall 2017 active period, showing its behavior can shift rapidly, USGS said.
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World’s largest acidic geyser erupts for first time since 2020
The world’s largest acidic geyser is erupting for the first time in six years. Yellowstone National Park’s Echinus Geyser is part of the very active Norris Geyser Basin in Wyoming. In early February, the geyser began spewing out acid and water up to 30 feet into the air. The new eruptions highlight the power of the hottest and most dynamic region of Yellowstone National Park. Acid geysers like Echinus are considered rare since acidic water is us…
·United States
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The Billings GazetteReposted by 
Helena Independent Record
Helena Independent RecordWorld’s largest acidic geyser in Norris Geyser Basin erupted in February
The world’s largest acidic geyser is located in Norris Geyser Basin. Lately, it’s been putting on quite a show.
·Billings, United States
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Total News Sources16
Leaning Left1Leaning Right1Center12Last UpdatedBias Distribution86% Center
Bias Distribution
- 86% of the sources are Center
86% Center
C 86%
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