It had been sitting silent for almost four decades, but when the Calbuco Volcano in Chile erupted on Wednesday, it sent smoke and ash several miles into the sky.
The effects are so severe that President Michelle Bachelet has declared a state of emergency and around 4000 people have been evacuated within a 12 mile (20 kilometer) radius. There have been no reports of deaths, missing persons or injuries.
"I would like to remind people coming to the zone to continue covering themselves. The fundamental risk for people with this ash, that they avoid breathing in this ash," Bachelet stated.
Locals who witnessed the eruption were in a state of awe – yet terrified.
"I had never seen this. It scares you in the beginning. You start to wonder what is going to happen to you. Everyone starts to think about gathering water," a resident told Reuters.
“At the beginning, it was small and then as the cloud grew there was a huge cloud over you and true terror starts. It's the first time I've been through something like this,” said another.
Footage from cameras at the Puerto Montt airport in southern Chile show the exact moment the volcano erupted.
After Indonesia, Chile has the second-largest chain of volcanoes and the Calbuco is one of the top three most potentially dangerous volcanoes in the country.