
The SciencesMarch 1, 1981
The Eruptions of Mount St. Helens
The volcano's current cycle of activity is part of a pattern extending over 4,500 years. Indeed, its violent eruptions of last year were predicted by volcanologists on the scene

The Eruptions of Mount St. Helens
The volcano's current cycle of activity is part of a pattern extending over 4,500 years. Indeed, its violent eruptions of last year were predicted by volcanologists on the scene