World's largest acidic geyser erupts for first time since 2020

Environment Conservation World's largest acidic geyser erupts for first time since 2020 Echinus Geyser in Yellowstone National Park is in one of the park's hottest and most dynamic regions. Breakthroughs, discoveries, and DIY tips sent six days a week. The world's largest acidic geyser is erupting for the first time in six years. Yellowstone National Park's Echinus Geyser is part of the very active Norris Geyser Basin in Wyoming. In early February, the geyser began spewing out acid and water up to 30 feet into the air.