Ash from Chilean volcano covers fields, towns

A man walks in a park full of volcanic ash, spewed from the Chile's Calbuco volcano, in Villa La Angostura, southern Argentina, Thursday, April 23, 2015. Twin blasts from the Calbuco volcano in southern Chile have sent vast clouds of ash into the sky, increasing concerns that it could contaminate water, cause respiratory illnesses and ground more flights. (AP Photo/Federico Grosso)

A horse walks along a street covered with volcanic ash from the eruption of the Calbuco volcano in Puerto Varas, Chile, Thursday, April 23, 2015. Twin blasts from the Calbuco volcano in southern Chile sent vast clouds of ash into the sky, covering this small town with thick soot and raising concerns that the dust could contaminate water, cause respiratory illnesses and ground flights. (AP Photo/Luis Hidalgo)

A bus drives along an ash covered road, caused by the eruption of Chile's Calbuco volcano in Villa La Angostura, in southern Argentina, Thursday, April 23, 2015. Chile's President Michelle Bachelet declared a state of emergency, saying the eruption of Calbuco is "more serious and unpredictable" than the one last month at the Villarica volcano, which also forced the evacuation of thousands. (AP Photo/Federico Grosso)

Leaves sit on ground covered by volcanic ash from Chile's Calbuco volcano in Villa La Angostura, southern Argentina, Thursday, April 23, 2015. The volcano in Southern Chile has erupted after being dormant for about half a century on Wednesday, sending a thick plume of ash and smoke several kilometers into the sky. (AP Photo/Federico Grosso)

The Calbuco volcano is seen the background as cattle feed from a field covered with ash from the volcano's latest eruption in Puerto Varas, Chile, Thursday, April 23, 2015. Due to the eruption the Chilean government has declared a state of emergency in the region surrounding the volcano, including the cities of Puerto Montt and Puerto Varas, and handed over civil authority to the armed forces. (AP Photo/Luis Hidalgo)

A car passes through a road covered with ash from the eruption of the Calbuco volcano in Puerto Varas, Chile, Thursday, April 23, 2015. Due to the eruption the Chilean government has declared a state of emergency in the region surrounding the volcano, including the cities of Puerto Montt and Puerto Varas, and handed over civil authority to the armed forces. (AP Photo/Luis Hidalgo)

A woman holds a mask to her face as she stands with her belongings before evacuating the town of Ensenada, Chile after the Calbuco volcano erupted, Thursday, April 23, 2015. The volcano erupted Wednesday for the first time in more than 42 years, billowing a huge ash cloud over a sparsely populated, mountainous area in southern Chile, and is considered one of the top three most potentially dangerous among Chile's 90 active volcanoes. (AP Photo/Pablo Sanhueza Gutierrez)

A group of people are evacuated from the town of Ensenada, destroyed by ash from the eruption of the Calbuco volcano in Puerto Varas, Chile, Thursday, April 23, 2015. Due to the eruption the Chilean government has declared a state of emergency in the region surrounding the volcano, including the cities of Puerto Montt and Puerto Varas, and handed over civil authority to the armed forces. (AP Photo/Luis Hidalgo)

Footprints from humans and animals are left behind in the ash spewed from Chile's Calbuco volcano in Villa La Angostura in southern Argentina, Thursday, April 23, 2015. The volcano erupted Wednesday afternoon for the first time in more than four decades, and then had another outburst early Thursday. (AP Photo/Federico Grosso)

A bus drives along an ash covered road, caused by the eruption of Chile's Calbuco volcano in Villa La Angostura, in southern Argentina, Thursday, April 23, 2015. The volcano erupted Wednesday afternoon for the first time in more than four decades, and then had another outburst early Thursday. No injuries are reported but one hiker remains missing. (AP Photo/Federico Grosso)

A man waits at a bus stop waiting to be evacuated, on a street in the town of Ensenada awash with ash from the eruption of the Calbuco volcano in Puerto Varas, Chile, Thursday, April 23, 2015. Ensenada, in the foothills of the volcano, looked like a ghost town but for an occasional horse or dog roaming its only street. Most of its residents had evacuated after the initial eruption Wednesday, with only about 30 people refusing to leave out of worry for their homes and animals. (AP Photo/Luis Hidalgo)

A couple of dogs walk along a road covered with volcanic ash from the eruption of the Calbuco Volcano in Puerto Varas, Chile, Thursday, April 23, 2015. Due to the eruption the Chilean government has declared a state of emergency in the region surrounding the volcano, including the cities of Puerto Montt and Puerto Varas, and handed over civil authority to the armed forces. (AP Photo/Luis Hidalgo)