Yellowstone's rare acidic geyser is active again after years of dormancy, USGS says
ABC News • • science
Key Points:
- Echinus Geyser, the world's largest acidic geyser in Yellowstone National Park, has resumed erupting after several years of dormancy, with eruptions beginning in early February 2024 and occurring every two to five hours since February 16.
- The geyser, known for its acidic water with a pH between 3.3 and 3.6, produces eruptions reaching up to 30 feet high, and its unique chemistry creates distinctive red mineral formations around the pool.
- Historically, Echinus was a frequent and prolonged performer during the late 20th century, erupting every 40 to 50 minutes and sometimes lasting up to 90 minutes, but activity declined in the early 2000s due
