An aerial view of the Kaoiki fault on the south flank of Mauna Loa. Grassy slopes mark this fault, with Mauna Loa lava flows in the foreground and the slope of Mauna Loa in the background. This fault is prominently visible while driving Highway 11 in the Kaʻū Desert area of Hawaiʻi Volcanoes National Park. USGS photo by K. Mulliken.
Multimedia
Images
May 22, 2026 — View of Kaoiki fault on Mauna Loa
An aerial view of the Kaoiki fault on the south flank of Mauna Loa. Grassy slopes mark this fault, with Mauna Loa lava flows in the foreground and the slope of Mauna Loa in the background. This fault is prominently visible while driving Highway 11 in the Kaʻū Desert area of Hawaiʻi Volcanoes National Park. USGS photo by K. Mulliken.
Graphs of ground deformation and earthquake data spanning three eruptions at Mauna Loa.
Graphs of ground deformation and earthquake data spanning three eruptions at Mauna Loa.Graphs of ground deformation and earthquake data spanning three eruptions at Mauna Loa.
Graphs of ground deformation and earthquake data spanning three eruptions at Mauna Loa.
Graphs of ground deformation and earthquake data spanning three eruptions at Mauna Loa.Graphs of ground deformation and earthquake data spanning three eruptions at Mauna Loa.
December 23, 2025 — Mauna Loa summit and Mauna Kea
December 23, 2025 — Mauna Loa summit and Mauna KeaAt the end of their Mauna Loa summit overflight on December 23, USGS Hawaiian Volcano Observatory geologists passed the 2022 Northeast Rift Zone eruption site. In this photo, an older vent known as Steaming Cone is visible in the lower-left of the frame (red and white colors), with the 2022 fissure 3 cone just to the right of it (black and brown colors).
December 23, 2025 — Mauna Loa summit and Mauna Kea
December 23, 2025 — Mauna Loa summit and Mauna KeaAt the end of their Mauna Loa summit overflight on December 23, USGS Hawaiian Volcano Observatory geologists passed the 2022 Northeast Rift Zone eruption site. In this photo, an older vent known as Steaming Cone is visible in the lower-left of the frame (red and white colors), with the 2022 fissure 3 cone just to the right of it (black and brown colors).
December 2, 2025—Kīlauea, Mauna Loa, and Mauna Kea
December 2, 2025—Kīlauea, Mauna Loa, and Mauna KeaThis aerial photograph shows Kīlauea, Mauna Loa and Mauna Kea. In the foreground is the forested area just north of Kīlauea caldera; the slope of Mauna Loa's Northeast Rift Zone rises to the left side of the image, while Mauna Kea is visible in the background. USGS photo by K. Mulliken.
December 2, 2025—Kīlauea, Mauna Loa, and Mauna Kea
December 2, 2025—Kīlauea, Mauna Loa, and Mauna KeaThis aerial photograph shows Kīlauea, Mauna Loa and Mauna Kea. In the foreground is the forested area just north of Kīlauea caldera; the slope of Mauna Loa's Northeast Rift Zone rises to the left side of the image, while Mauna Kea is visible in the background. USGS photo by K. Mulliken.
Puahiohio (dust devils) at Kīlauea and Mauna Loa
Upper left: a dusty lava puahiohio (at right in frame) above the main 2022 Mauna Loa lava flow on 2 December 2022, with the eruptive plume further in the background (at left in frame). Upper right: a lava puahiohio rips up the crust of the Kīlauea summit lava lake on 7 June 2023.
Upper left: a dusty lava puahiohio (at right in frame) above the main 2022 Mauna Loa lava flow on 2 December 2022, with the eruptive plume further in the background (at left in frame). Upper right: a lava puahiohio rips up the crust of the Kīlauea summit lava lake on 7 June 2023.
August 12, 2025 — Mauna Loa monitoring network maintenance
August 12, 2025 — Mauna Loa monitoring network maintenanceOn August 12, USGS-Hawaiian Volcano Observatory scientists visited the ML/MTcam monitoring site on the north side of Moku‘āweoweo—the summit caldera of Mauna Loa volcano. At the site, field engineers changed batteries, installed a new antenna, and replaced solar panels that had been damaged during winter storms. USGS photo by M. Cappos.
August 12, 2025 — Mauna Loa monitoring network maintenance
August 12, 2025 — Mauna Loa monitoring network maintenanceOn August 12, USGS-Hawaiian Volcano Observatory scientists visited the ML/MTcam monitoring site on the north side of Moku‘āweoweo—the summit caldera of Mauna Loa volcano. At the site, field engineers changed batteries, installed a new antenna, and replaced solar panels that had been damaged during winter storms. USGS photo by M. Cappos.
Videos
Mauna Loa 2022 Eruption Anniversary
Mauna Loa 2022 eruption anniversary video. Mauna Loa is Earth's largest active volcano and covers just over half of the Island of Hawaiʻi. It erupted most recently in November-December 2022, and it will erupt again.
Mauna Loa 2022 eruption anniversary video. Mauna Loa is Earth's largest active volcano and covers just over half of the Island of Hawaiʻi. It erupted most recently in November-December 2022, and it will erupt again.
Mauna Loa 2022 Eruption Anniversary (AD)
Mauna Loa 2022 eruption anniversary video. Mauna Loa is Earth's largest active volcano and covers just over half of the Island of Hawaiʻi. It erupted most recently in November-December 2022, and it will erupt again.
Mauna Loa 2022 eruption anniversary video. Mauna Loa is Earth's largest active volcano and covers just over half of the Island of Hawaiʻi. It erupted most recently in November-December 2022, and it will erupt again.
December 8, 2022 — Mauna Loa Fissure 3
During a morning overflight on December 9, 2022, Hawaiian Volcano Observatory geologists noted a reduced output of lava at fissure 3 on the Northeast Rift Zone of Mauna Loa. The lava fountain is much lower than yesterday and the lava in the channel is much lower than the levees. USGS video by M. Patrick.
During a morning overflight on December 9, 2022, Hawaiian Volcano Observatory geologists noted a reduced output of lava at fissure 3 on the Northeast Rift Zone of Mauna Loa. The lava fountain is much lower than yesterday and the lava in the channel is much lower than the levees. USGS video by M. Patrick.
December 9, 2022 — Mauna Loa Fissure 3 Lava Channel
December 9, 2022 — Mauna Loa Fissure 3 Lava ChannelAerial view of the upper lava channel from fissure 3 on the Northeast Rift Zone of Mauna Loa. On December 9, 2022, Hawaiian Volcano Observatory geologists noted a reduced output of lava at fissure 3 and this photo shows that the level of lava in the channel is the lowest it has been since the eruption started. USGS video by M. Patrick.
December 9, 2022 — Mauna Loa Fissure 3 Lava Channel
December 9, 2022 — Mauna Loa Fissure 3 Lava ChannelAerial view of the upper lava channel from fissure 3 on the Northeast Rift Zone of Mauna Loa. On December 9, 2022, Hawaiian Volcano Observatory geologists noted a reduced output of lava at fissure 3 and this photo shows that the level of lava in the channel is the lowest it has been since the eruption started. USGS video by M. Patrick.
December 9, 2022 — Mauna Loa Fissure 3
Aerial view of fissure 3 erupting on the Northeast Rift Zone of Mauna Loa on December 9, 2022. The eruption continues but the vigor has greatly reduced over the past 24 hours. USGS video by M. Patrick.
Aerial view of fissure 3 erupting on the Northeast Rift Zone of Mauna Loa on December 9, 2022. The eruption continues but the vigor has greatly reduced over the past 24 hours. USGS video by M. Patrick.
December 8, 2022 — Mauna Loa Fissure 3
The Northeast Rift Zone eruption of Mauna Loa continues with a major change overnight. The fissure 3 (F3) vent continues to erupt but the supply of lava appears to be much reduced this morning. Lava is overtopping channels near the vent with flows extending no farther than 2.5 mi (4 km) from the vent.
The Northeast Rift Zone eruption of Mauna Loa continues with a major change overnight. The fissure 3 (F3) vent continues to erupt but the supply of lava appears to be much reduced this morning. Lava is overtopping channels near the vent with flows extending no farther than 2.5 mi (4 km) from the vent.
Audio
Volcano Minute — Magnitude-4.8 deep beneath Pāhala on November 5, 2024
Volcano Minute — Magnitude-4.8 deep beneath Pāhala on November 5, 2024It’s Volcano Minute, brought to you by the USGS Hawaiian Volcano Observatory.
Volcano Minute — Magnitude-4.8 deep beneath Pāhala on November 5, 2024
Volcano Minute — Magnitude-4.8 deep beneath Pāhala on November 5, 2024It’s Volcano Minute, brought to you by the USGS Hawaiian Volcano Observatory.
Webcams
[MSTcam] South Pit and Upper Southwest Rift Zone - thermal image from Moku‘āweoweo south rim
[MSTcam] South Pit and Upper Southwest Rift Zone - thermal image from Moku‘āweoweo south rimThis image is from a research camera positioned on the south rim of Mokuʻāweoweo, Mauna Loa's summit caldera, in Hawaiʻi Volcanoes National Park. The camera looks west-southwest, across South Pit, focusing on the south part of Mauna Loa's summit region and upper Southwest Rift Zone.
[MSTcam] South Pit and Upper Southwest Rift Zone - thermal image from Moku‘āweoweo south rim
[MSTcam] South Pit and Upper Southwest Rift Zone - thermal image from Moku‘āweoweo south rimThis image is from a research camera positioned on the south rim of Mokuʻāweoweo, Mauna Loa's summit caldera, in Hawaiʻi Volcanoes National Park. The camera looks west-southwest, across South Pit, focusing on the south part of Mauna Loa's summit region and upper Southwest Rift Zone.
[MDLcam] The Upper and Middle Parts of Mauna Loa's Southwest Rift Zone
[MDLcam] The Upper and Middle Parts of Mauna Loa's Southwest Rift ZoneLive image of Mauna Loa's upper and middle Southwest Rift Zone from Dandelion Cone along the middle part of the rift zone [MDLcam]. This camera is a pan-tilt-zoom model and the view may change depending on activity.
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[MDLcam] The Upper and Middle Parts of Mauna Loa's Southwest Rift Zone
[MDLcam] The Upper and Middle Parts of Mauna Loa's Southwest Rift ZoneLive image of Mauna Loa's upper and middle Southwest Rift Zone from Dandelion Cone along the middle part of the rift zone [MDLcam]. This camera is a pan-tilt-zoom model and the view may change depending on activity.
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[MSPcam] Mauna Loa's Southwest Rift Zone from the South Point area
[MSPcam] Mauna Loa's Southwest Rift Zone from the South Point areaLive image of Mauna Loa's Southwest Rift Zone from the South Point area [MSPcam]. This camera is a pan-tilt-zoom model and the view may change depending on activity.
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[MSPcam] Mauna Loa's Southwest Rift Zone from the South Point area
[MSPcam] Mauna Loa's Southwest Rift Zone from the South Point areaLive image of Mauna Loa's Southwest Rift Zone from the South Point area [MSPcam]. This camera is a pan-tilt-zoom model and the view may change depending on activity.
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[HLcam] Live Image of Mauna Loa's northwest flank from Hualālai volcano
[HLcam] Live Image of Mauna Loa's northwest flank from Hualālai volcanoLive view of the northwest flank of Mauna Loa; the view is from the southeast flank of Hualālai [HLcam]. This camera is a pan-tilt-zoom model and the view may change depending on activity.
[HLcam] Live Image of Mauna Loa's northwest flank from Hualālai volcano
[HLcam] Live Image of Mauna Loa's northwest flank from Hualālai volcanoLive view of the northwest flank of Mauna Loa; the view is from the southeast flank of Hualālai [HLcam]. This camera is a pan-tilt-zoom model and the view may change depending on activity.
[MK2cam] Mauna Loa's Summit and Northeast Rift Zone from Mauna Kea
[MK2cam] Mauna Loa's Summit and Northeast Rift Zone from Mauna KeaLive Image of Mauna Loa's Summit and Northeast Rift Zone from Mauna Kea [MK2cam]. This camera is a pan-tilt-zoom model and the view may change depending on activity.
[MK2cam] Mauna Loa's Summit and Northeast Rift Zone from Mauna Kea
[MK2cam] Mauna Loa's Summit and Northeast Rift Zone from Mauna KeaLive Image of Mauna Loa's Summit and Northeast Rift Zone from Mauna Kea [MK2cam]. This camera is a pan-tilt-zoom model and the view may change depending on activity.
[PScam] Puʻu ʻŌʻō South Flank from the South Rim
This image is from a temporary research camera positioned just south of Puʻu ʻŌʻō, looking north at the southern flank of Puʻu ʻŌʻō's cone.
Disclaimer
This image is from a temporary research camera positioned just south of Puʻu ʻŌʻō, looking north at the southern flank of Puʻu ʻŌʻō's cone.
Disclaimer