Volcanic Blast Reshaped Summit of Indonesia’s Mount Sinabung

With a graphic line superimposed on the area of the new crater, this photo shows the peak of Mount Sinabung in Karo, North Sumatra, before and after its eruption on Monday. Volcanologists say the eruption of the volcano that shot ash 3 miles high also “annihilated” the mountain’s summit. (Photos via the Center for Volcanology and Geological Hazard Mitigation of Indonesian Energy and Mineral Resources Ministry)

JAKARTA, Indonesia (AP) — The eruption of Indonesia’s Mount Sinabung that shot ash 3 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 volcano in North Sumatra, which has been active since 2010 after centuries of dormancy, erupted explosively on Monday morning.

Hot ash clouds rolled down its slopes, traveling as far as 3 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.

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