These images by Chilean photographer Francisco Negroni of the Cordon Caulle volcano erupting are so jaw-dropping and mind-blowing that we’re finding it hard to come up with appropriate adjectives. This particular volcanic eruption began in June 2011, and Negroni was there with his trusty Nikon D300 to capture the action.
2,460-meter-high Mount Sinabung erupted three times on Saturday, producing columns of ash about 2 kilometers tall and spreading hot rocks and ash over a 4.5 kilometer radius, said Sutopo Purwo Nugroho, spokesman for National Agency For Disaster Management (BNPB). An ash cloud from a Mount Sinabung eruption is seen from Kuta Tengah village in Karo district, Indonesia's North Sumatra province, January 14, 2014. On the eve of the eruption local authorities allowed nearly 14,000 villagers to return to the village situated next to the volcano. Mount Sinabung is one of 127 active volcanoes in Indonesia which is prone to seismic upheaval as it rests on the so-called Pacific Ring of Fire encircling the Pacific Ocean. The country’s most deadly volcanic catastrophe in recent years was the 2010 eruption of Mount Merapi.
Indonesian residents rescue a victim following eruptions of Mount Sinabung in Karo district, North Sumatra province, on February 1, 2014. An Indonesian man wearing a mask stands against Sinabung volcano while it spews thick smoke and hot ash in Karo on January 16, 2014.

In this photo taken of January 21, 2014 from Karo district, molten lava rolls down from the crater of Mount Sinabung volcano during an eruption.
A mother holds her son as they watch the eruption of Mount Sinabung at Berastepu village in Karo district, Indonesia's North Sumatra province, January 10, 2014.
At least 14 people have died after a volcano on the Indonesian island of Sumatra spewed lava and hot gas. Most of the 14 victims died in a village less than 3km from the peak of Mount Sinabung, said Asren Nasution, head of the local disaster management agency. Earthquake swarms, seismic events marked by sequences of many earthquakes in a short period of time, may signal imminent volcanic eruptions because they are triggered by blocked lava flow, according to a new study, and scientists suggest these types of earthquakes can be used to give the public warning of an impending eruption. Writing in the journal Geophysical Research Letters, a team of scientists detail their study of the 2006 eruption of Augustine Volcano in Alaska. Helena Buurman, lead study author the University of Alaska, Fairbanks, said the research on earthquake swarms preceding volcanic eruption led her to believe that they were caused by subterranean lava behaving abnormally. In one 2 hour period of the earthquake swarm, the researchers observed the earthquake's "focus" moving 35 meters deeper down into the magma conduit, or the channel outside a volcano created by molten magma.
Billowing clouds of ash are joined by spiderwebs of Volcanic lightning to create a light show that truly drives home Mother Nature’s terrifying splendor.

The dead included four high school students on a school trip to see the volcano and a local journalist, said National Disaster Mitigation Agency spokesman Sutopo Purwo Nugroho.
This is the first time the volcanic activity in the area is known to have resulted in deaths, Andi Arief, a presidential staff member, told Reuters.
They contend that a swarm of 54 earthquakes in the three days prior to the eruption were triggered from sources within the volcano's magma conduit. As pressure built inside the clogged conduit, it may have triggered the eruption of Augustine Volcano the following day. Television footage showed villages, farms and trees around the 8,530-foot -high volcano covered in thick gray ash. Mount Sinabung is among about 130 active volcanoes in Indonesia and has sporadically erupted since September.

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