YELLOWSTONE NATIONAL PARK — While explosions are relatively common in Yellowstone National Park (YNP), according to the Yellowstone Volcano Observatory (YVO), Excelsior Geyser was especially active in the 1880s. Before the 2024 Black Diamond Pool explosion at Biscuit Basin, Excelsior produced the largest well-observed front-country hydrothermal explosions. YVO Scientist in Charge Michael Poland writes in […]
