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Steep-sided volcanic cones along the Andes on the Chilean-Argentinean border add texture to this false-color satellite image. Of approximately 1,800 volcanoes scattered across this region, 28 are active and form part of the Andean volcanic belt that runs down the length of South America. For more information on other active volcanoes in the region, see the Natural hazards – volcanism subfield in the Geography section under either Chile or Argentina. Image courtesy of USGS.