Welcome to the Marys Peak Group of the Oregon Sierra Club!

About the Marys Peak Group

The Marys Peak Group operates from Corvallis, Oregon and serves the region of Benton, Lincoln, Linn, Marion, and Polk counties — from the Yachats to Otis on the Pacific coast to the high Cascades. We take our name from the nearby Marys Peak, the highest mountain in the coast range. more...


MPG Evening Program, 7pm, February 10: Beauty from the Beast: Plate Tectonics and the Landscapes of the Pacific Northwest

The same geological forces that threaten our lives with earthquakes and volcanic eruptions also nourish our spirits by forming spectacular mountains, valleys, and coastlines. Dr. Robert J. Lillie will relate this "Beauty from the Beast" story of the Pacific Northwest by highlighting the relationship between the spectacular scenery in our region to the geological processes that created them. He draws on his experience as a geology professor, park ranger and graphic illustrator to remind us that our hometowns and iconic parklands are subject to geologic processes that affect our lives and livelihoods. By learning to live with the beast of earthquakes, tsunamis, and volcanic eruptions, we can more fully appreciate the beauty that surrounds us. Dr. Lillie's extensively illustrated book on this topic will be for sale at the end of the program. This program is held at and co-sponsored by the Corvallis-Benton County Public Library, from 7:00 to 8:30 PM.

View a description of all our upcoming evening programs


To join or ask questions about membership, please send an email to Susan Kropp. Member benefits

Contributions, gifts and dues to the Sierra Club are not tax deductible; they support our effective, citizen-based advocacy and lobbying efforts.

Make a Donation to the Sierra Club Foundation

You can specifically help the Marys Peak Group with its outings program, trail work, and evening programs by donating to the Marys Peak Group foundation. These donations are tax deductible.

Donations may be sent to:

Sierra Club Foundation
P.O. Box 863
Corvallis, OR 97339

For information contact treasurer Julie Arrington


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