Images

The eruption in Halema'uma'u crater, at the summit of Kīlauea, continues.

View of the active western half of the lava lake in Halema‘uma‘u at the Kīlauea summit. The main island that serves as a boundary between the active (west) and inactive (east) parts of the lake is the brown area in the middle right side of this photo.

Sunset on the evening of December 8, 2021, provided stunning views of the eruption in Halema'uma'u crater, at the summit of Kīlauea. This photograph, taken from the Keanakākoʻi overlook within Hawai'i Volcanoes National Park, looks northwest from the south rim of Kīlauea caldera.

This zoomed-in view of the western fissure within Halema‘uma‘u, at the summit of Kīlauea, was captured on December 7, 2021, through the lens of a laser rangefinder.

Red hot lava overturns the crust of the western end of the Halema‘uma‘u lava lake at the summit of Kīlauea volcano. These overturns are often seen along the edge of the lake by the 1-meter-high (3 ft) rim surrounding the active surface area. USGS image by J. Schmith.

On the sunny morning of December 3, at around 11 a.m. HST, the western vent in Halema‘uma‘u crater hissed with steam from large parts of the 19-meter-high (62 feet) cone after a rainfall earlier in the morning. Although the lava inside the cone was not visible, HVO field crews observed that lava continued to flow into the lava lake from the east side of the vent.

View from the south looking at the western, active part of the lava lake in Halema‘uma‘u crater at the summit of Kīlauea. Effusion into the lava lake is slow and steady with a few red-orange incandescent patches of lava visible within the flat black part of the lava lake. The perched margin of the active lava lake is visible around its perimeter. USGS photo by D.

View from the south looking at the active west vent in Halema‘uma‘u at Kīlauea summit. The vent is mostly obscured by a plume of steam and sulfur dioxide, with a little spatter visible. A lava flow is slowly entering the lava lake from the base of the scoria cone that has been constructed around the west vent. USGS photo by D. Downs.

Lava continues to erupt from a perched lava pond within the west vent of Halema‘uma‘u crater at the summit of Kīlauea. This photo shows spatter bursts through the pond and a roiling and sloshing pond surface, as well as a white-trailed tropicbird (koa‘e kea)..

Lava erupts through a perched lava pond in the active western vent of Halema‘uma‘u crater, and supplies lava to the lava lake. Spatter bursts like the one seen here disrupt the pond surface nearly continuously and occasionally throw lava outside the vent, building up the cone. This burst is approximately 5 meters (16 feet) tall. USGS photo taken by B.

Lava continues to eruption from a vent on the western wall of Halema‘uma‘u crater and flow into the lava lake. The active area of the lava lake remains similar in size to the previous week. In the foreground, a down-dropped block containing a segment of the old Crater Rim Drive can be seen. The southeast flank of Mauna Loa is in the background.

This reference map depicts the ongoing Kīlauea summit eruption on November 19, 2021. One eruptive vent is active within Halema‘uma‘u at this time, along the western edge of the rising lava lake.

A telephoto photograph of the roiling 4-7 meter (13-23 ft) lava fountains of the western vent in Halema‘uma‘u crater at the summit of Kīlauea. The spatter cone is nearly circular, with only one outlet letting lava cascade east into the lake. Concentric lava crust rings form around where lava enters the lake from a single source with persistent flux.

The ongoing eruption at Kīlauea summit continues to fill Halemaʻumaʻu crater with lava. A gas plume rises from the active vent on the west (left) side of the crater as lava flows from the vent into the rising lava lake (black surface).

Aerial view looking northeast of the eastern half of the Kīlauea summit caldera, taken during a helicopter overflight of the Kīlauea summit on the morning of November 16, 2021. The current lava lake in Halema‘uma‘u is visible in bottom left, and scarps associated with 2018 Kīlauea summit collapse are prominent in the center of the photo.

This thermal image is looking west and shows the lava lake in Halema‘uma‘u, at the summit of Kīlauea. The active lava on the surface is limited to the west side of the lake, near the west vent. The eastern portion is solidified at the surface, with small ooze-outs often active along the lake perimeter.

A helicopter overflight on November 16, 2021, at approximately 8:30 a.m. HST allowed for aerial visual and thermal imagery to be collected of Halema‘uma‘u crater at the summit of Kīlauea. The scale of the thermal map ranges from blue to red, with blue colors indicative of cooler temperatures and red colors indicative of warmer temperatures.

The elevation of the surface of the lava lake within Halema‘uma‘u crater has now risen slightly above the level of the lowest down-dropped block from the 2018 collapse of Kīlauea summit. Overnight on November 15, 2021, a lava break-out from the edge of the lake allowed lava to flow onto the surface on the block.

HVO geologists observed ongoing eruptive activity with Halema‘uma‘u crater during a helicopter overflight of the Kīlauea summit on the morning of November 16, 2021. Lava continues to erupt from a vent on the west side (far side in this photo) of Halema‘uma‘u. Low winds allowed the plume to rise vertically above the crater.

During a helicopter overflight of Kīlauea summit on the morning of November 16, 2021, this aerial view (looking southwest) of the lava flow erupted in September 1982 was captured. The September 1982 lava flow exited Kīlauea summit caldera through a narrow gap, visible near the center of the photo.

A helicopter overflight on November 16, 2021, at approximately 8:30 a.m. HST allowed for aerial visual and thermal imagery to be collected of Halema‘uma‘u crater at the summit of Kīlauea. The scale of the thermal map ranges from blue to red, with blue colors indicative of cooler temperatures and red colors indicative of warmer temperatures.