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People stand at an area covered by volcanic materials from Mount Semeru after eruption in Lumajang, East Java, Indonesia, Dec. 2, 2020. The Semeru volcano, located in the Lumajang district of the East Java province, erupted at 1:23 a.m. local time on Tuesday. About 550 people fled home as the volcano released incandescent lava and hot clouds. (Photo by Aditya Irawan/Xinhua)