A woman stands near a waterfall that has been dirtied by ash that has accumulated from the plume of an erupting volcano near Eyjafjallajokull, Iceland on April 18, 2010.

2010年4月18日一名妇女站在被冰岛火山灰污染的瀑布附近。

Horses fight near the town of Sulfoss, Iceland as a volcano in Eyjafjallajokull erupts on April 17, 2010.

Farmer Thorarinn Olafsson tries to lure his horse back to the stable as a cloud of black ash looms overhead in Drangshlid at Eyjafjoll on April 17, 2010.

A small plane (upper left) flies past smoke and ash billowing from a volcano in Eyjafjallajokul, Iceland on April 17, 2010.

Smoke billows from a volcano in Eyjafjallajokull on April 16, 2010.

The sun sets in a sky dusted with ash, over Lake Geneva, as seen from the Lavaux Vineyard Terraces, a UNESCO site in Switzerland, on April 17, 2010.

The volcano in southern Iceland's Eyjafjallajokull glacier sends ash into the air Saturday, April 17, 2010.