A man walks past, with the Nevado del Ruiz volcano in the background, in Manizales city July 1, 2012. Colombia evacuated people from communities close to the Nevado del Ruiz volcano after an eruption on June 30, 2012 that spewed smoke and ash from its crater, bringing back memories of avalanches that in 1985 buried tens of thousands under rocks. REUTERS/Jaime Saldarriaga (COLOMBIA - Tags: DISASTER ENVIRONMENT)