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Rock, ash fill river after volcano eruption in Chile

Roberto Candia / AP

Police officers watch the overflowing river Nilahue after the eruption of the Puyehue-Cordon Caulle volcano in Los Venados, Chile, on June 9, 2011. The volcano erupted Saturday after remaining dormant for decades, causing the evacuation of about 3,500 people in the nearby area and carrying ash across the Andes to Argentina.

See more images of the eruption in our slideshow and watch the video below:

A river in southern Chile sends steam into the air and becomes filled with rock and ash following the recent eruption of Cordon Caulle. Msnbc.com's Al Stirrett reports.