smoking crater of halemaumau kilauea volcano in hawaii volcanoes national park on big island

volcano halemaumau kilauea caldera volcanoes active vent smoking cloud plume hawaii volcanic lava dome sulfur crater pit smoke national park magma eruption erupting gas ash geological geology cliff collapse island color erupt usa rise sky smell stinky strong summit unpleasant uwekahuna viewpoint vista barren big america hawaiian landscape nature rock steam vertical view