Solitary Dog Sculptor I

A boat covered by volcanic ash sits docked on the bank of Nahuel Huapi Lake, also blanketed in volcanic ash, in Villa La Angostura in southern Argentina, Thursday June 16, 2011. (Federico Grosso/Associated Press) 

A cloud of ash billows from the Puyehue volcano near Osorno, 870 km south of Santiago, on June 17, 2011. The ash cloud from a Chilean volcano that disrupted flights and stranded travelers as far away as Australia returned after its own round-the-world tour on Friday, civil aviation officials said. The cloud from the Puyehue volcano, high in Chile's Andes, disrupted travel across South America, Australia and New Zealand for several days following its eruption on June 4, stranding thousands of travelers. (Alvaro Vidal/AFP/Getty Images) 

 

Houses and trees are covered by volcanic ash on the bank of Nahuel Huapi Lake in Villa La Angostura in southern Argentina, Sunday June 19, 2011. The Chilean government says the volcano in southern Chile that began erupting about two weeks ago is becoming less active. That will allow 4,000 people who were evacuated near the volcano to return home. (Federico Grosso)/Associated Press) 

 

A tourist watches volcanic ash float on Nahuel Huapi lake as ash from Chile's Puyehue-Cordon Caulle volcano began falling again over San Carlos de Bariloche in southern Argentina, Saturday June 11, 2011. (Photos Pantagonia/Associated Press)

 

 

A volunteer shovels volcanic ash, brought by Chile's Puyehue-Cordon Caulle volcano, in Ingeniero Jacobacci, southern Argentina, Monday June 20, 2011. (Photo Patagonia/Associated Press) 

 

Volunteers remove volcanic ash, brought by Chile's Puyehue-Cordon Caulle volcano, from the ground in Ingeniero Jacobacci in southern Argentina, Monday June 20, 2011. (Photo Patagonia/Associated Press) 

 

Leaves remain covered by a coat of ash from the Puyehue volcano in Caulle, 900 km south of Santiago, on June 20, 2011. The ash cloud from a Chilean volcano that disrupted flights and stranded travelers as far away as Australia returned after its own round-the-world tour on Friday, civil aviation officials said. The cloud from the Puyehue volcano, high in Chile's Andes, disrupted travel across South America, Australia and New Zealand for several days following its eruption on June 4, stranding thousands of travelers. (Martin Bernetti/AFP/Getty Images)

 

Dante, a 16-year-old guitar student, practices his instrument after attending a guitar class as he returns home along streets blanketed with volcanic ash in Ingeniero Jacobacci in southern Argentina, Monday June 20, 2011. (Photo Patagonia/Associated Press)

 

A man on a pier watches the ash and lava fragments on the surface of the Puyehue Lake, in the vicinity of the Puyehue to volcano, near Osorno, 870 km south of Santiago, on June 20, 2011. (Martin Bernetti/AFP/Getty Images)

 

People on the shore of Lake Nahuel Huapi's Machete branch, touch the ash from Chile's Puyehue volcano which practically cover its surface, near Villa La Angostura, in the Argentine province of Neuquen, taken on June 19, 2011. Thousands of evacuated Chileans were allowed to return home Sunday two weeks after the eruption of the Puyehue volcano, which sent a huge ash cloud into the sky and disrupted air travel in the southern hemisphere. (Francisco Ramos Mejia/AFP/Getty Images)

 

A vehicle is covered with volcanic ash from Chile's Puyehue volcano, in Villa La Angostura's El Mallin neighbourhood, in the Argentine province of Neuquen on June 19, 2011. (Ramos Mejia/AFP/Getty Images)

 

People walk past a a school in Villa Llanquin, a hamlet covered by volcanic ash spew from Chilean volcano Puyehue along route 40 on the banks of Limay river, 50 km from Bariloche, in the Argentine province of Rio Negro, on June 17, 2011. The ash cloud from Chile's Puyehue volcano caused widespread travel chaos in the southern hemisphere since it erupted for the first time on June 4 after lying dormant dormant half a century. (Ramos Mejia/AFP/Getty Images)

 

Policemen and neighbors unload iron sheets from a pick-up vehicle in Villa Llanquin, a town covered with ash from Chilean volcano Puyehue, along route 40 on the banks of Limay river, 50 km from Bariloche, in the Argentine province of Rio Negro, on June 17, 2011. (Ramos Mejia/AFP/Getty Images)

 

A boat and a bicycle remain covered with ash from Chilean volcano Puyehue, in Villa Llanquin a hamlet along route 40 on the banks of Limay river, 50 km from Bariloche, in the Argentine province of Rio Negro, on June 17, 2011. (Ramos Mejia/AFP/Getty Images)

 

A road is blanketed with sand and volcanic ash from the Chilean Puyehue-Cordon Caulle volcano, are moored in Puerto Arauco on the Nahuel Huapi Lake, in Villa La Angostura, southern Argentina, Friday, June 17, 2011. The volcano started erupting on June 4 after remaining dormant for decades. (Federico Grosso/Associated Press)

 

A shed whose roof collapsed under the weight of ash from Chilean volcano Puyehue, in Villa Llanquin a hamlet along route 40 on the banks of Limay river, 50 km from Bariloche, in the Argentine province of Rio Negro, on June 17, 2011. (Ramos Mejia/AFP/Getty Images)

 

The pier of Puerto Arauco at Nahuel Huapi Lake is seen covered by sand and volcanic ash from the Chilean Puyehue-Cordon Caulle volcano in Villa La Angostura, southern Argentina, Friday, June 17, 2011. (Federico Grosso/Associated Press)

 

A vehicle belonging to Argentina's border police (Gendarmeria Nacional) rides by a path covered by ash from Chile's Puyehue-Cordon Caulle volcano chain, in Villa Llanquin hamlet, near San Carlos de Bariloche June 17, 2011. (Gendarmeria/handout/via Reuters)

 

A diver of the Prefectura Naval Argentina inspects the Rio Limay covered with ash from Chile's Puyehue-Cordon Caulle volcano chain at the mountain resort of San Carlos de Bariloche in Argentina's Patagonia June 16, 2011. Some towns in Argentina's Patagonia remain blanketed in volcanic ash. Airline activity is getting back to normal after days of chaos caused by a towering ash cloud, but Andean towns are covered in a thick, ash blanket that is disrupting water and power supplies and raising fears over the key winter ski season that starts next month. (Chiwi Giambirtone/Reuters)

 

A cow is covered by ash from Chile's Puyehue-Cordon Caulle volcano in Villa La Angostura in southern Argentina, Thursday June 16, 2011. (Federico Grosso/Associated Press)

 

The Ranjentuco stream banks are covered with a coat of ash spew from Chilean volcano Puyehue in the outskirts of Villa La Angostura in Neuquen, some 1600 km south-west of Buenos Aires, on June 16, 2011. Air New Zealand cancelled domestic flights across much of the South Island Thursday after the Chile ash cloud was detected at lower levels than previously recorded, the airline said. (Ramos Mejia/AFP/Getty Images)

 

A man removes volcanic ash from a roof in downtown Villa La Angostura, in Neuquen, some 1600 km south-west of Buenos Aires, on June 16, 2011. (Ramos Mejia/AFP/Getty Images)

 

An overview of the mountain resort Villa la Angostura blanketed with ash from Chile's Puyehue-Cordon Caulle volcano chain in Argentina's Patagonia June 15, 2011. (Osvaldo Peralta/Reuters)

 

Argentina's border police and rescue workers remove ash covered trees from a stream that leads to a lake to avoid blockage of the water passage in Villa La Angostura in southern Argentina, Wednesday June 15, 2011. Chile's Puyehue-Cordon Caulle started erupting on June 4 after remaining dormant for decades. The ash spread across the Pacific, prompting authorities to suspend flights in Australia and New Zealand. (Federico Grosso/Associated Press)

Ashes and smoke billow through the clouds after the eruption of the Puyehue-Cordon Caulle volcano in Chile, seen from the border cross with Argentina, Cardenal Samore, in southern Chile, Wednesday June 15, 2011. (Alvaro Vidal/Associated Press) 

A sheep stands in a field covered in volcanic ash from Chile's Puyehue-Cordon Caulle volcano near Pilcaniyeu in southern Argentina, Tuesday June 14, 2011. (Photos Patagonia/Associated Press)

 

A view is seen of a cloud of ash from Chile's Puyehue-Cordon Caulle volcano chain near sunset at the mountain resort San Martin de Los Andes in Argentina's Patagonia June 12, 2011. (Patricio Rodriguez/Reuters)

 

A person looks at volcanic ash and smoke from the Puyehue-Cordon Caulle volcano as seen from Entrelagos, in southern Chile, Friday, June 10, 2011. The volcano erupted Saturday after remaining dormant for decades, causing the evacuation of about 3,500 people in the nearby area and carrying ash across the Andes to Argentina. (/Roberto Candia/Associated Press)

 

Footprints in volcanic ash accumulated near the Puyehue volcano, close to Osorno, 870 km south of Santiago on June 7, 2011. (Claudio Santana/AFP/Getty Images) 

 

In this combination photograph, Lake Nahuel Huapi is seen in a file photo from August 17, 2009 (top), and on June 8, 2011 with pumice and ash accumulated on its shore from an eruption of the Puyehue Volcano across the border in Chile. The volcano, dormant for decades, erupted in south-central Chile on June 4, belching ash over 6 miles (10 km) into the sky, as winds fanned it toward neighboring Argentina, and prompted the government to evacuate several thousand residents, authorities said. (Chiwi Giambirtone/Reuters)