Photos: Hawaii's Kilauea volcano erupts A USGS Hawaiian Volcano Observatory geologist takes video of the eruption that started within Halemaumau crater, Kilauea summit, at about 3:20 p.m. on September 29, 2021. (D. Downs/USGS)
Photos: Hawaii's Kilauea volcano erupts This webcam image provided by the United States Geological Survey shows a view of an eruption that has begun in the Halemaumau crater at the summit of Hawaii's Kilauea volcano, Wednesday, Sept. 29, 2021. (USGS via AP)
Photos: Hawaii's Kilauea volcano erupts This webcam image provided by the United States Geological Survey shows a view of an eruption that has begun in the Halemaumau crater at the summit of Hawaii’s Kilauea volcano, Wednesday, Sept. 29, 2021. (USGS via AP)
Photos: Hawaii's Kilauea volcano erupts This webcam image provided by the United States Geological Survey shows a view of an eruption that has begun in the Halemaumau crater at the summit of Hawaii’s Kilauea volcano, Wednesday, Sept. 29, 2021. (USGS via AP)
Photos: Hawaii's Kilauea volcano erupts At approximately 3:20 p.m. HST on September 29, 2021, an eruption began within Halemaumau crater in Kilauea’s summit caldera, within Hawaii Volcanoes National Park. Fissures opened to the east of the large island within the lava lake that was active in Halemaumau crater from December 2020 until May 2021, and are generating lava flows on the surface of the older lava lake. At approximately 4:43 p.m. HST, another vent opened on the west wall of Halemaumau crater, and is visible in the left side of this image. (USGS)
Photos: Hawaii's Kilauea volcano erupts Kilauea volcano is erupting. At approximately 3:20 p.m. HST on September 29, 2021, an eruption began within Halemaumau crater in Kilauea’s summit caldera, within Hawaii Volcanoes National Park. (USGS)
Photos: Hawaii's Kilauea volcano erupts An eruption began within Halemaumau crater in Kilauea’s summit caldera, within Hawaii Volcanoes National Park, on September 29, 2021. Vigorous lava fountains formed in the middle part of the lava lake that was active in Halemaumau crater from December 2020 until May 2021. The lava fountains fed lava flows that quickly covered the entire floor of Halemaumau crater. (USGS)
Photos: Hawaii's Kilauea volcano erupts At approximately 4:43 p.m. HST on September 29, 2021, another vent opened on the west wall of Halemaumau crater, a little more than an hour after new fissure vents opened on the floor of Halemaumau crater. By 5:09 p.m., when this photo was taken, the west wall vents had grown. (USGS)
Photos: Hawaii's Kilauea volcano erupts At approximately 4:43 p.m. HST on September 29, 2021, another vent opened on the west wall of Halemaumau crater. This telephoto image shows the vent area and lava fountain through volcanic gas. (USGS)
Photos: Hawaii's Kilauea volcano erupts The eruption that began Wednesday within Halemaumau crater in Kilauea's summit caldera, within Hawaii Volcanoes National Park, is generating a vigorous plume of volcanic gas. (USGS)
Photos: Hawaii's Kilauea volcano erupts An image of the new Kilauea summit fissure eruption within Halemaumau crater taken at approximately 4:15 p.m. HST on September 29, 2021. (D. Downs/USGS)
Photos: Hawaii's Kilauea volcano erupts The new eruption within Halemaumau crater at Kilauea's summit is depositing tephra downwind of the erupting vents. Tephra is a term that describes products of an eruption that travel through the air before being deposited. (USGS)
