A bulldozer removes ash from a street at Ensenada town which is covered with ashes from Calbuco volcano

A bulldozer removes ash from a street at Ensenada town which is covered with ashes from Calbuco volcano

A bulldozer removes ash from a street at Ensenada town which is covered with ashes from Calbuco volcano near Puerto Varas city, April 23, 2015. An ash cloud from volcano Calbuco in southern Chile that erupted unexpectedly on Wednesday was blowing into Chile and Argentina on Thursday, forcing the cancellation of flights from nearby towns in both countries. The volcano, which last had a major eruption in 1961, has belched a spectacular plume of ash and smoke around 15 kilometers into the sky near Puerto Varas, some 1,000 kilometers (625 miles) south of Santiago. REUTERS/Ivan Alvarado