PHOTOS: Calbuco volcano erupts in ChileThe Calbuco volcano is seen erupting from Puerto Varas, Chile, Wednesday, April 22, 2015.
Carlos F. Gutierrez
SANTIAGO, Chile -- The Calbuco volcano erupted Wednesday for the first time in more than 42 years, billowing a huge ash cloud over a sparsely populated, mountainous area in southern Chile. See photos above.