Mount Semeru, the highest volcano on Indonesia’s most densely populated island of Java, spewed hot clouds as far away as 4.5 kilometres (nearly 3 miles) on Saturday.There were no immediate evacuations, but the National Disaster Mitigation Agency warned people who live in the villages on the slopes of the 3,676-metre (12,060-foot)-high mountain to be vigilant in looking for signs of danger.Agency spokesman Raditya Jati said that people around the river basin on the slopes of the mountain should…

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