A live camera captured a hydrothermal explosion at the Black Diamond Pool in Yellowstone National Park‘s Biscuit Basin on Saturday, December 20th, by a Yellowstone Volcano Observatory webcam. The explosion occurred around 9:23am MST.
Morning "kablooey" at Black Diamond Pool, Biscuit Basin, Yellowstone National Park!
— USGS Volcanoes🌋 (@USGSVolcanoes) December 20, 2025
(Recorded by the Yellowstone Volcano Observatory webcam just before 9:23 a.m. MST on December 20, 2025.)@YellowstoneNPS pic.twitter.com/INsDHpSN5g
This occurred at the same site of the large hydrothermal explosion that destroyed a boardwalk and sent rock, mud, and debris flying hundreds of feet into the air on July 23rd, 2024. Dirty eruptions reaching between 30-40 feet in height have taken place sporadically from the pool since then.
Several such events have occurred over the past few weeks, primarily taking place at night and only recognized through their sound. This represents a nice view of one of the dirty eruptions, occurring in the early morning under the blue sky.
