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HVO geologists observed the new eruption within Kīlauea summit caldera during an eruption-monitoring overflight the morning of September 11, 2023. Multiple minor fountains remain active in the eastern portion of Halema‘uma‘u crater floor and on the downdropped block within Kīlauea's summit caldera.

HVO geologists observed the new eruption within Kīlauea summit caldera during an eruption-monitoring overflight the morning of September 11, 2023. Multiple minor fountains remain active in the eastern portion of Halema‘uma‘u crater floor and on the downdropped block within Kīlauea's summit caldera.

HVO geologists observed the new eruption within Kīlauea summit caldera during an eruption-monitoring overflight the morning of September 11, 2023. Multiple minor fountains remain active in the eastern portion of Halema‘uma‘u crater floor and on the downdropped block within Kīlauea's summit caldera.

HVO geologists observed the new eruption within Kīlauea summit caldera during an eruption-monitoring overflight the morning of September 11, 2023. Multiple minor fountains remain active in the eastern portion of Halema‘uma‘u crater floor and on the downdropped block within Kīlauea's summit caldera.

HVO geologists observed the new eruption within Kīlauea summit caldera during an eruption-monitoring overflight the morning of September 11, 2023. Multiple minor fountains remain active in the eastern portion of Halema‘uma‘u crater floor and on the downdropped block within Kīlauea's summit caldera.

HVO geologists observed the new eruption within Kīlauea summit caldera during an eruption-monitoring overflight the morning of September 11, 2023. Multiple minor fountains remain active in the eastern portion of Halema‘uma‘u crater floor and on the downdropped block within Kīlauea's summit caldera.

HVO geologists observed the new eruption within Kīlauea summit caldera during an eruption-monitoring overflight the morning of September 11, 2023. Multiple minor fountains remain active in the eastern portion of Halema‘uma‘u crater floor and on the downdropped block within Kīlauea's summit caldera.

HVO geologists observed the new eruption within Kīlauea summit caldera during an eruption-monitoring overflight the morning of September 11, 2023. Multiple minor fountains remain active in the eastern portion of Halema‘uma‘u crater floor and on the downdropped block within Kīlauea's summit caldera.

HVO geologists observed the new eruption within Kīlauea summit caldera during an eruption-monitoring overflight the morning of September 11, 2023. Multiple minor fountains remain active in the eastern portion of Halema‘uma‘u crater floor and on the downdropped block within Kīlauea's summit caldera.

HVO geologists observed the new eruption within Kīlauea summit caldera during an eruption-monitoring overflight the morning of September 11, 2023. Multiple minor fountains remain active in the eastern portion of Halema‘uma‘u crater floor and on the downdropped block within Kīlauea's summit caldera.

From the Uēkahuna overlook, the new eruption at the summit of Kīlauea is visible. The farthest east fissure is near the to margin of downdropped block that formed during the 2018 summit collapse. The base of the main fissure, which is farthest west (right on the image), is approximately 70 meters wide.

The new eruption at the summit of Kīlauea volcano on September 10, 2023. After about an hour of increased seismic activity and uplift, HVO scientists observed the start of the eruption at approximately 3:15 p.m. HST.

The new eruption at the summit of Kīlauea volcano on September 10, 2023. After about an hour of increased seismic activity and uplift, HVO scientists observed the start of the eruption at approximately 3:15 p.m. HST.

The new eruption at the summit of Kīlauea volcano on September 10, 2023. After about an hour of increased seismic activity and uplift, HVO scientists observed the start of the eruption at approximately 3:15 p.m. HST.

The new eruption at the summit of Kīlauea volcano on September 10, 2023. After about an hour of increased seismic activity and uplift, HVO scientists observed the start of the eruption at approximately 3:15 p.m. HST.

The new eruption at the summit of Kīlauea volcano on September 10, 2023. After about an hour of increased seismic activity and uplift, HVO scientists observed the start of the eruption at approximately 3:15 p.m. HST.

The new eruption at the summit of Kīlauea volcano on September 10, 2023. After about an hour of increased seismic activity and uplift, HVO scientists observed the start of the eruption at approximately 3:15 p.m. HST.

The new eruption at the summit of Kīlauea volcano on September 10, 2023. After about an hour of increased seismic activity and uplift, HVO scientists observed the start of the eruption at approximately 3:15 p.m. HST.

The new eruption at the summit of Kīlauea volcano on September 10, 2023. After about an hour of increased seismic activity and uplift, HVO scientists observed the start of the eruption at approximately 3:15 p.m. HST.

The new eruption at the summit of Kīlauea volcano on September 10, 2023. After about an hour of increased seismic activity and uplift, HVO scientists observed the start of the eruption at approximately 3:15 p.m. HST.

An eruption at the summit of Kīlauea volcano began on September 10, 2023. The main fountain, which HVO geologists estimate is approximately 50 meters tall, is on the eastern margin of Halemaʻumaʻu crater. As of approximately 4:30 p.m.