The Calbuco volcano erupted April 22, 2015 for the first time in more than 42 years, and Chilean authorities ordered thousands of people living in a town a few miles away to evacuate. Read more here.
Calbuco volcano erupts
Diego Main, AFP/Getty Images
A high column of ash and lava spews from the Calbuco volcano in southern Chile on April 22, 2015. 
