Vailulu'u volcano news & activity updates:
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: In the afternoon of 17 Oct, a particularly violent explosion occurred at Anak Krakatau, blasting away a portion of the southern crater rim. A similar event might have been the final trigger for the catastrophic landslide that let the cone collapse and cause a devastating tsunami on 22 Dec 2018.
Small spherical balls of volcanic ash that form from a wet nucleus falling through a volcanic ash cloud.