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This image, taken during an early morning overflight on 30 November 2022, shows Fissure 3, the dominant source of activity. As of 7 a.m. HST, the lava fountains are 20-25 meters in height (65-82 feet) and feed a lava flow moving to the northeast at ~130 meters per hour (0.08 miles per hour).

Photograph of a high-definition video camera filming fissure 3. Field crews are out today monitoring the eruption of Mauna Loa. Mauna Kea is in the distance behind the fountaining fissure. Taken at about 7:15 AM on November 30, 2022.

Photo showing the front of the aʻa flow closest to Saddle Road, taken on Nov. 30, around 3:30 pm HST. The photo was taken looking south to southeastward from the Hilo-Kona Road, approximately 4 miles south of Saddle Road and one mile west of the Mauna Loa Observatory Road.

A field crew was out documenting the location of the front of the flow closest to Saddle Road on Nov. 30, 2022, between 3:00 and 4:00 pm HST. This photo shows the front of the aʻa flow, with a helicopter for scale.

Photo showing the front of the aʻa flow closest to Saddle Road, taken on Nov. 30, around 3:30 pm HST. The photo was taken looking south to southeastward from the Hilo-Kona Road, approximately 4 miles south of Saddle Road and one mile west of the Mauna Loa Observatory Road.

Aerial image of fissure 3 on Mauna Loa's Northeast Rift Zone erupting the morning of November 30, 2022.  Fissure 3 remains the dominant source of the largest lava flow being generated during the eruption. USGS image by K. Mulliken. 

Aerial image of fissure 4 on Mauna Loa's Northeast Rift Zone erupting the morning of November 30, 2022.  Fissure 4 is less active than fissure 3, but is generating lava flows moving toward the northeast and a small lobe moving to the east. USGS image by K. Mulliken. 

Aerial image of the distal end of a lava flow from Mauna Loa's Northeast Rift Zone the morning of November 30, 2022. As of 12:30 HST p.m. on November 30, the flow front remained about 3.6 miles (5.8 km) from the Daniel K. Inouye Highway (Saddle Road). USGS image by K. Mulliken. 

Fissure 3 of the Northeast Rift Zone Mauna Loa eruption with a plume of volcanic gases and fine volcanic ash and Pele's hair being wafted in a near vertical plume. Taken at about 7:15 AM on November 30, 2022.

This image was taken on a helicopter overflight on the afternoon of November 29, 2022. It shows a lava flow cutting across the Mauna Loa Observatory Road in two places. USGS image by L. Gallant. 

Photograph taken from Saddle Road at 6AM Hawaii time on November 29, 2022 shows lava flows moving northeast downslope of Mauna Loa volcano from the Northeast Rift Zone eruption.

Photograph taken from Saddle Road at 6AM Hawaii time on November 29, 2022 shows lava flows moving northeast downslope of Mauna Loa volcano from the Northeast Rift Zone eruption.

This image shows an erupting fissure high on Mauna Loa's Northeast Rift Zone. Fountain heights of 20-25 meters (65-82 feet) were measured by HVO field crews on the morning of November 29, 2022. USGS image by L. Gallant.

An erupting fissure high on Mauna Loa's Northeast Rift Zone was issuing multiple lava flows on the morning of November 29, 2022. Fountain heights of 20-25 meters (65-82 feet) were measured by HVO field crews. A gas plume is rising off of the fissure and partially obscuring Mauna Kea in the background of the image. USGS image by L. Gallant. 

This image, taken during a helicopter overflight on the afternoon of November 29, shows the advancing flow front from Mauna Loa. This flow was erupted from a vent high up on the Northeast Rift Zone and is flowing to the north. USGS image by L. Gallant.