Kīlauea's Volcanic Gases and Their Environmental Impacts

Gas emissions from the crater of Pu‘u ‘Ō‘ō on Kīlauea's east rift zone (foreground) and the summit vent in Halema‘uma‘uCrater (background, just below the clouds) create volcanic pollution that affects the air quality of downwind communities. USGS photo by Tim Orr.