Yellowstone's rare acidic geyser is active again after years of dormancy, USGS says
Yahoo • • science
Key Points:
- Echinus Geyser, the world's largest acidic geyser located in Yellowstone National Park, has resumed erupting after several years of dormancy, with eruptions occurring every two to five hours since mid-February 2024.
- The geyser, known for its acidic water with a pH between 3.3 and 3.6, produces eruptions reaching heights up to 30 feet, although historically it has reached up to 75 feet during its peak activity in the late 20th century.
- Echinus was a frequent and popular geyser in the 1970s through the 1990s, but activity declined in the 2000s due to the loss of a secondary water source
