Smoke and lava spew from the Calbuco volcano, as seen from the shores of Lake Llanquihue in Puerto Varas, April 23, 2015 (Photo: Reuters)

Smoke and ash rise from the Calbuco volcano as seen from the city of Puerto Montt, April 22, 2015 (Photo: Reuters)

Smoke and ash rise from the Calbuco volcano as seen from the city of Puerto Montt, April 22, 2015 (Photo: Reuters)

Smoke and ash rise from the Calbuco volcano as seen from the city of Puerto Montt, April 22, 2015 (Photo: Reuters)

Smoke and ash rise from the Calbuco volcano, seen from Puerto Varas city, south of Santiago, April 22, 2015 (Photo: Reuters)

The Calbuco volcano is seen erupting from Puerto Varas, Chile, Wednesday, April 22, 2015 (Photo: AP)