Echinus Geyser Erupts in Yellowstone

The Echinus Geyser, located in United States — Yellowstone National Park's Norris Geyser Basin, has reawakened after approximately six years of dormancy, with its first eruption since December 2020 occurring on February 7, 2026. The world's largest acidic geyser, named by Albert Charles Peale in 1878, has since shown increased activity, with eruptions reaching 20-30 feet and occurring every 2-5 hours, particularly since February 16. The United States — United States Geological Survey is monitoring the geyser, noting its unique acidic water composition that prevents it from eroding its rock plumbing system. While the current activity is a rare sight for visitors, it is uncertain if it will continue into the summer tourist season, as historical patterns suggest active phases typically last 1-2 months.