Kīlauea summit eruption - October 12, 2021

Associated with an increase in fountaining activity at the main western vent in Halema‘uma‘u, a short-lived vent opened just to the north (right). Activity at this vent lasted about 10 hours with low-level fountaining about 3 meters (10 ft) high. Large fountaining bursts from the main vent threw lava above the height of the cone (30 meters or 100 ft), depositing spatter on the exterior slopes of the cone. USGS photo by B. Carr.