Yellowstone's Echinus Geyser erupted for the first time in six years, with multiple bursts reported in February.

Echinus Geyser, the largest known acid-water geyser on Earth, erupted on February 7, 2026, for the first time since December 2020. Located in Yellowstone National Park’s volatile Norris Geyser Basin, ...

“That’s Yellowstone being Yellowstone!” the U.S. Geological Survey wrote in an update, a plainspoken line that fits a place where quiet pools can suddenly return to life. In Yellowstone’s Norris ...

A new model of Yellowstone’s magma system suggests it is fueled by melts from the shallow mantle, guided by tectonic forces, ...