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Pu‘u‘ō‘ō crater floor subsiding on March 5, 2011

Detailed Description

After an intrusion on March 5, Pu‘u‘ō‘ō crater floor subsided for several hours. Hot incandescent crater walls were exposed as the floor dropped a total of 113 m (371 ft). Frequent rockfalls into the crater triggered red ash plumes. USGS photo taken by T. Orr on March 5, 2011, at 4:32 p.m.


Public Domain.