Mount St. Helens Day Trip

Day Trips
Topic(s) Covered
Ecology, Geology, Botany
Sep, Oct, and Jun
Up to 150 people
$350 Per OMSI Instructor
1 Instructor per 15 students
Grade Level(s)
5th — 12th
Spring, Autumn
6 hrs
Location Map
Currently Unavailable
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Mount St. Helens

Meet OMSI Outdoor Science Education instructors on location for the hands-on, interactive programming that makes our outdoor science schools so popular.

Explore the remnants of past eruptions at Mount St. Helens. Walk in the lava tubes of Ape Caves, see the lava trees of the Trail of Two Forests and examine the layers of the Lahar Viewpoint to discuss how eruptions from the past are connected to those of the future. Look at images of the past 30 years to understand forest succession through plant identification and soil profiles.

Schools are responsible for transportation to and from sites, chaperones at a 1:8 ratio and lunch.

A minimum of 2 weeks' advance notice is required for all registration requests. If you have questions, please contact us at 503.797.4661 or

Standards Addressed Structure and Function:
Describe and compare the properties and composition of the layers of Earth.
Describe the structure, function, and composition of Earth’s atmosphere, geosphere, and hydrosphere.
Interaction and Change:
Explain the interdependence of plants, animals, and environment, and how adaptation influences survival.
Explain the water cycle and the relationship to landforms and weather.
Explain how individual organisms and populations in an ecosystem interact and how changes in populations are related to resources.
Explain how landforms change over time at various rates in terms of constructive and destructive forces.
Describe the processes of Earth’s geosphere and the resulting major geological events.
Analyze evidence for geologic, climatic, environmental, and life form changes over time.
Explain how Earth’s atmosphere, geosphere, and hydrosphere change over time and at varying rates. Explain techniques used to elucidate the history of events on Earth.
Evaluate the impact of human activities on environmental quality and the sustainability of Earth systems. Describe how environmental factors influence resource management.