The Calbuco volcano in southern Chile has erupted twice in the space of a few hours The Calbuco volcano is one of the most active in Chile, but its eruption took officials in the area by surprise. The nearby city of Puerto Montt – a gateway to the popular Patagonia region – has already been blanketed in a cloud of ash. TV footage showed traffic jams in the city and long queues at petrol stations. The nearby town of Puerto Varas was also under a state of alert. 
