The southern Chile volcano Puyehue erupted yesterday, sending ash more than six miles into the air and forcing 3,500 people to be evacuated from their homes. The volcano erupted yesterday afternoon after a series of earthquakes in the morning, as many as 230 per hour, reports the AP. Much of the heavy ash cloud has crossed the border into Argentina, falling on the resort city of San Carlos de Bariloche and closing the local airport. This is the first major eruption in the Puyehue-Cordon Caulle volcano chain since 1960, the Guardian reports. (More volcano stories.)