An Indonesian man stands next to a mosque in the village of Tiga Serangkai in Karo, North Sumatra on September 23, 2015, as mount Sinabung spews volcanic ash in the distance. Sinabung is one of 129 active volcanoes in Indonesia, which sits on the Pacific Ring of Fire, a belt of seismic activity running around the basin of the Pacific Ocean. (Photo by Albert Damanik/AFP Photo)
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