At 9:06 a.m. HST, an ash plume rose from the Overlook crater at KÄ«lauea’s summit. Similar to recent plumes, this event was likely caused by a rockfall from the crater’s steep walls. The plume’s reddish color is most likely from altered rock and ash fragments that fell into the deepening conduit. Photo taken Friday, May 11, 2018 courtesy of U.S. Geological Survey
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