Yellowstone Caldera Chronicles is a weekly column written by scientists and collaborators of the Yellowstone Volcano Observatory. This week's contribution is from Michael Poland, geophysicist with the U.S. Geological Survey and Scientist-in-Charge of the Yellowstone Volcano Observatory. Happy Birthday to the Yellowstone Volcano Observatory!  In May 2026, the observatory turned 25 years old.  But the idea for the observatory didn’t germinate in Yellowstone National Park. Rather, it was another national park where the stage was set. In September 2000, a unique workshop was convened in the city of Redding, California.  The “ Volcanism in National Parks ” gathering was organized by the Geologic Resources Division of the National Park Service and the Volcano Hazards Program of the U.S. Geological Survey, and it was intended to improve scientific input to park managers, as well as volcano monitoring and research in parks. Bumpass Hell, a hydrothermal area in Lassen Volcanic National Park.…