Group 1: What causes volcanoes?
Understanding Plate Motions
Frequently Asked Questions
Sunset Crater's Eruption
Group 2: Where and what are some known volcanoes?
Weekly Volcanic Activity Report
Virtual Field Trip
Group 3: What are volcano hazards?
Types of Volcano Hazards
Mt. Saint Helens Eruption
Volcano Hazards Program
Last Updated: 10/13/2015