In addition, a pyroclastic cloud – which is a mixture brought to high temperature of gas, ash and rocks – descends the slopes of Sinabung.
However, no casualties or material damage were reported.
The Sinabung, which rises to 2,460 meters above sea level, is located about 50 kilometers southwest of the provincial capital Medan. Since 2010, it has erupted regularly, forcing the evacuation of tens of thousands of people. More than 20 people were killed in violent eruptions in 2014 and 2016.
The Merapi volcano, which erupted in late January, continues to rumble. It is spitting ash and rocks, which have spread up to two kilometers on the southwest flank of the conical volcano, authorities said.
Almost 3,000 meters high Merapi is Indonesia’s most active volcano and is located about 35 kilometers north of the city of Yogyakarta. The last major eruption of Merapi dates back to 2010. It killed more than 300 people and forced more than 280,000 inhabitants to evacuate.
Indonesia sits on the Pacific Ring of Fire, where the friction of tectonic plates causes frequent earthquakes and volcanic eruptions.
The Southeast Asian archipelago has nearly 130 active volcanoes.
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