The Alaska Volcano Observatory says that if the snowcapped volcano erupts, the impacts could include damage to aircraft from ash.

Mount Spurr, located about 75 miles West of Anchorage, has been acting up in recent weeks, prompting officials at the U.S.

Alaska's largest city. Mount Spurr has two vents, or openings, in the Earth's crust from which lava, volcanic gas and other byproducts of volcanic activity escape. The vent at the highest point on ...