Alaska Volcano Observatory, eruption from Mount Spurr

It’s the closest active volcano to Alaska’s population centers. The gas emissions show that new magma has formed under the volcano, which “indicates that an eruption is likely, but not ...
Mount Spurr is one of 53 volcanoes in Alaska that have been active within the last 250 years. It has two main vents. The last known eruption from the summit vent was more than 5,000 years ago.