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A large section of a wall along Kilauea volcano’s Halemaumau crater collapsed into a lava lake, triggering a small explosion in the early hours of Friday, December 2.

Video: Kilauea Volcano rockfall causes lava lake explosion

Monday, December 5, 2016, 3:21 - A rockfall from the south wall of Halemaʻumaʻu Crater triggered a small explosive event in the summit lava lake.

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The video featured above, recorded by the Hawaiian Volcano Observatory’s webcam on the crater rim, shows the explosion. 

The explosion threw fragments of molten lava onto the rim of the crater, mostly to the west of the former visitor overlook.

The incident was the second last week after another slab of the wall along the same crater collapsed on November 28, hurling lava and boulders hundreds of feet into the air, Honolulu Star Adviser reported. 

This area has been closed to the public since 2008 due to ongoing volcanic hazards, including explosive events like the one that happened Monday, November 28, 2016.

Only a relatively small amount of spatter reached the rim of Halemaʻumaʻu, compared to the thick, continuous layer of spatter seen here on the intermediate ledge midway between the lava lake and the Halemaʻumaʻu Crater rim. Photo taken Monday, November 28, 2016 courtesy of USGS/HVO

HVO scientists visited the rim of Halemaʻumaʻu this afternoon (11/28) to collect samples of tephra and check for equipment damage. This view, taken on the approach to the Halemaʻumaʻu, shows the tephra deposit on the crater rim. New spatter is seen as dark lumps scattered across the center of the image on top of older brown-colored Pele’s hair. The closed Halemaʻumaʻu overlook is in the background at right; HVO and the Jaggar Museum are on the caldera rim in the distance near upper left. Photo taken Monday, November 28, 2016 courtesy of USGS/HVO

Video/Photos courtesy of USGS/HVO.

Source: USGS, Hawaiian Volcano Observatory/United States Geological Survey (USGS) via Storyful

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