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.
The Echinus Geyser - located in the park's famous Norris Geyser Basin - had been in slumber since 2020, and it's unknown whether the eruptions will continue into the summer.
Researchers say geysers can sometimes become active for a month or two before falling dormant again.
"Geysers are always turning on and off. That's Yellowstone being Yellowstone!", the US Geological Survey wrote on X.
A geyser is a spring of water which has been heated geothermally, and which erupts at various rates.
