The last time I wrote about the Yellowstone supervolcano, an earthquake about 100 miles from the famous caldera renewed some concerns about a potential eruption.
Now speculation has started again after Yellowstone’s Echinus Geyser, the largest acidic geyser on Earth, has erupted again for the first time since 2020.
Located in the Back Basin of the Norris Geyser Basin, the geyser unexpectedly erupted on Feb. 7 after nearly six years of dormancy, marking its first eruption since December 2020, with subsequent bursts on Feb. 9, 12 and 15.
The activity shifted into high gear on Feb. 16, with eruptions occurring every two to five hours, according to the U.S. Geological Survey (USGS).
The agency noted the rarity of acid geysers, as the acidic water can break down the rock that makes up a geyser’s plumbing system....
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