Lightning flashes around the ash plume at above the Puyehue-Cordon Caulle volcano chain near Entrelagos June 5. The volcano in the Puyehue-Cordon Caulle chain, dormant for decades, erupted in south-central Chile on Saturday, belching ash over 6 miles (10 km) into the sky, as winds fanned it toward neighboring Argentina, and prompted the government to evacuate several thousand residents. (Carlos Gutierrez/Reuters)
