Indonesian authorities raised the alert for Mount Semeru volcano to the highest level on Wednesday after a series of eruptions. The volcano lies on the country’s most densely populated island,
Mount Semeru in East Java province unleashed avalanches of searing clouds of hot ash and a mixture of rock, lava and gas that traveled up to 7 kilometers (4.3 miles) down its slopes several times since midday to dusk, while a column of hot clouds rose 2 kilometers (1.2 miles) into the air, Indonesia’s Geology Agency said in a statement.
