Molten lava and rocks went flying through the air on Hawaii's Kilauea volcano after an explosion caused by the partial collapse of a crater wall.
The US Geological Survey's Hawaiian Volcano Observatory says the collapse on Sunday triggered a small explosion, spreading lava and debris around the rim of the crater.
The explosion happened on Kilauea's Halemaumau Crater. Video of the event shows a wall of rocks falling into a lava lake that has been rising over the past week.
The USGS says fist-size chunks of rock were thrown onto the closed Halemaumau visitor overlook.
The area has been closed since 2008 when the lava lake formed, and no one was injured.
A magnitude 3.6 earthquake was felt in the area early on Monday morning, according to the USGS.
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