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Mount Sinabung spews volcanic ash as seen from Tiga Pancur village in Karo, North Sumatra, Indonesia, on Nov. 21, 2017. (Xinhua/YT Haryono)
Mount Sinabung spews volcanic ash as seen from Tiga Pancur village in Karo, North Sumatra, Indonesia, on Nov. 21, 2017. (Xinhua/YT Haryono)