Yellowstone Caldera Chronicles ... explosions were those of Excelsior Geyser in the late 1800s. Excelsior Geyser is located in Midway Geyser Basin, adjacent to the spectacular Grand Prismatic ...

Geologists have revealed new details about a recent geyser ... Yellowstone Caldera Chronicles. No one was injured, he wrote, but "the explosion heavily damaged the nearby boardwalk, and the basin ...