Science Pavlof eruption: How big is it?

The Alaskan volcano's ash column reached four miles, say local pilots. NASA also captured images of lava running from the mountaintop.

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Paul Horn/Alaska Fish and Game

Alaska's Pavlof volcano turned up the volume on its new eruption yesterday (June 2), sending up a billowy ash plume that could threaten local flights, according to the Alaska Volcano Observatory (AVO).