On Saturday July 12, 2008, Okmok Volcano on Mount Okmok, located on Umnak, erupted for several days, through a fresh vent sending wet, ash and gas-rich plume that reached an altitude of in the air and forcing the evacuation of Fort Glenn, a private cattle ranch located on the island. Ash fell not only on the eastern part of the island but also on a fishing village on the northeast. However, the Aleut village, Nikolski, on the opposite side of Umnak Island with a population of about 40 people to the west of Okmok Volcano escaped from the southeasterly path of the ash clouds. The ash plume also disrupted operation of flights to the Dutch Harbor airport as it spread across many miles of the North Pacific.