Chile's southern Llaima volcano erupted Tuesday after 13 years of dormancy, shooting smoke, debris and flames from one of its two craters and forcing 150 people in its vicinity to be evacuated, the National Emergency Office said.

"We don't know what the volcano will do next," said office director Carmen Fernandez, adding that all nearby villages and towns have been put on alert for possible evacuations.

So far, she said, some 150 people visiting the Conguillio National Park where the volcano is located have been evacuated.

She said experts were flying over the volcano to determine the extent of the eruption.

The 3,125-meter (10,250-foot) high volcano has erupted some 60 times in recorded history, the last time in 1994.