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Rockfall into volcano causes explosive event Friday (Dec 2)


As you watch this video, note the rocky ledge at the bottom of the webcam image. At 6:58 a.m., HST, today (Dec 2), this large slab of the summit vent wall directly below HVO’s HMcam collapsed. Rocks falling into the lava lake triggered a small explosive event that bombarded the rim of HalemaÊ»umaÊ»u Crater with spatter (fragments of molten lava), similar to Monday’s (Nov. 28) event. These rockfalls and explosions, which occur without warning, in addition to sulfur dioxide gas emissions, are why this hazardous area remains closed. Video courtesy of USGS/HVO

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