Pool of boiling water that formed via collapse a few days after the June 13, 2026, hydrothermal explosion at Biscuit Basin, Yellowstone National Park

Pool of boiling water that formed a few days after the June 13, 2026, hydrothermal explosion at Biscuit Basin, Yellowstone National Park, and that is located near the middle vent group of features that formed during the explosion.  The pool is about 6.5 × 5.3 meters (21 × 17 feet) in size and formed via collapse based on the lack of surrounding ejecta.  The formation time is uncertain, but must have been between the afternoon of Sunday, June 14, and the morning of Tuesday, June 16.  View is to the southeast, with Black Diamond Pool in the right middle ground and the Firehole River in the background.