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Mount Sinabung spews volcanic ash near Tiga Kincat villages, in Karo, North Sumatera, Indonesia, on Dec. 2. 2017. (Xinhua/Andri Ginting)
Mount Sinabung spews volcanic ash near Tiga Kincat villages, in Karo, North Sumatera, Indonesia, on Dec. 2. 2017. (Xinhua/Andri Ginting)