Kīlauea'S 2024-2025 eruption resumed around 3 pm HST on January 22, 2025, and ended around 4:30 am HST on January 23, 2025. USGS Hawaiian Volcano Observatory field crews observed the eruptive vents around 9 am on January 23 after the eruption had paused again. The south cone (on the left) is 40 m (131 feet) tall and the north cone (on the right) is about 38 m (125 feet tall). USGS photo by K. Lynn.

USGS Hawaiian Volcano Observatory geologists captured this view across Kaluapele floor, showing the cones that have formed around the recently active north and south vents. USGS photo by J. Barnett. 

During a USGS Hawaiian Volcano Observatory monitoring overflight the morning of January 24, 2025, geologists observed that parts of the recently erupted lava flows are already showing signs of alteration. Fumarolic areas where degassing has occurred are marked by white alteration that has developed on the lava flows that make up the floor of Halema‘uma‘u. USGS photo by J. Barnett. 

On the morning of January 24th, USGS Hawaiian Volcano Observatory scientists conducted an overflight of Kīlauea summit to capture thermal and surficial imagery of the December 2024 to January 2025 paused eruption. This aerial view shows the two vents in the southwest corner of Halema’uma’u no longer erupting since the pause on January 23rd but continuing to puff steam. USGS photo by J. Barnett.

USGS Hawaiian Volcano Observatory scientists landed east of the recently erupting vents at Kīlauea summit on January 24, 2025. They landed on a cooled part of Halema’uma’u crater floor and scouted for a good place to sample the most recently erupted flow. USGS photo by J. Barnett.

Two USGS Hawaiian Volcano Observatory scientists use a rock hammer to sample the flow from episode five of the recent eruption at Kīlauea summit, which has now cooled and hardened to solid rock. USGS photo by J. Barnett.