• 1980 Eruption
  • 2004 - 2008 Eruption
  • Crater Glacier
  • Past Eruptions
  • Facts and Research
  • Eruption Impacts and Return of Life
  • Changing Landscape
  • Facts and Research
  • Guided Hikes and Programs
  • Youth Volcano Camps
  • Field Trips
  • Community Events
  • Teacher Workshops
  • Volunteer
  • Overview
  • Indoor Facilities
  • Field Camp
  • Reservations
  • Activities
  • Volunteer at SLC
  • Geology Lessons
  • Biology Lessons
  • Plan Your Field Trip
  • Classroom Programs
  • Teacher Workshops
  • Useful Links

    • Pyroclastic Flows: Introduction

    All traces of the pre-eruption forest were erased by fiery pyroclastic flows. A vibrant new ecosystem is developing, yielding fascinating insights about ecosystem processes.

    Back to Return to Life
    USFS Washington State DOT USFS USFS USGS / Peter Lipman USGS / Tom Casadevall University of Washington / Jerry Franklin © Charlie Crisafulli WSU Vancouver / John Bishop CSU Chico / Dave Wood WSU Vancouver / John Bishop Brad Johnson Quinault Indian Nation / Larry Workman UC Riverside / Mike Allen Tim Delano Quinault Indian Nation / Larry Workman WSU Vancouver / John Bishop USFS / Peter Frenzen USFS / Peter Frenzen USFS USFS USFS USFS
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    Thanks to Our Sponsor

    Become a Sponsor

    The Mount St. Helens Science and Learning Center is a collaborative effort of the Mount St. Helens Institute and the U.S. Forest Service, Mount St. Helens National Volcanic Monument. Our mission is to connect people with nature through science, the arts and adventure recreation.

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