Eruption 'Completely Annihilates' Mountain Peak

The eruption of Indonesia's Mount Sinabung that shot ash three miles high also blew away much of the mountain's summit. Before and after images from Indonesia's Center for Volcanology and Geological Hazard Mitigation show an enormous chunk missing from the peak, which it called "completely annihilated." Volcanologist Devy Kamil Syahbana said Tuesday that the chunk, known as the "lava dome," had a volume of at least 56.5 million cubic feet, the AP reports. The volcano in North Sumatra, which roared back to life in 2010 after more than 400 years of dormancy, erupted explosively on Monday morning.

Hot ash clouds rolled down its slopes, traveling as far as three miles from the crater, and ash reached Lhokseumawe, a city more than 162 miles to the northwest. No one was injured. Video showed screaming children fleeing a school outside the volcano's exclusion zone as a billowing column of ash rose in the background. Mount Sinabung is among more than 120 active volcanoes in Indonesia, which is prone to seismic upheaval due to its location on the Pacific "Ring of Fire," an arc of volcanoes and fault lines encircling the Pacific Basin. (A journalist and a group of students who wanted to see the eruptions up close were among 14 people killed when Sinabung erupted in 2014.)