The Cotopaxi volcano spews ash and smoke in Machachi, Ecuador, August 14, 2015. Ecuador's massive Cotopaxi volcano stirred in the early hours of Friday, with two small explosions reported and ash raining down on the southern part of nearby highland capital Quito. Authorities stressed that the explosions and a five-kilometer (3 mile) high plume of ash do not signify that the Andean country's highest active volcano, which has been showing signs of activity since April, is about to erupt. (Photo by Guillermo Granja/Reuters)
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