Northern-most water-filled fracture that formed on June 13, 2026, near Black Diamond Pool, Biscuit Basin, Yellowstone National Park

Looking south, toward Black Diamond Pool (steaming blue area in the left middle ground) along a fissure that formed during a small hydrothermal explosion on June 13, 2026, in Biscuit Basin, Yellowstone National Park.  The fissure is about 18.5 meters (61 feet) long and filled with near-boiling water.