A shot of the Augustine volcano toward the end of it's long eruption that lasted several months. Air travel was affected as a result. In January 2006, the volcano explosively erupted—flight paths were moved, and flights were cancelled to avoid aircraft encounters with volcanic ash. For the time period of January 11 - March 20, the Anchorage Volcanic Ash Advisory Center issued 567 text reports concerning Augustine. Commercial airline flights in western Alaska were cancelled on January 18; additional commercial airline flights to/from Anchorage were cancelled on January 30, 2006. 
This photo was taken on March 27, 2006 eruption. Credit: Cyrus Read, USGS
Cyrus Read, U.S. Geological Survey
2006-03-27
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