One Tam

Bird's-eye view of Lake Lagunitas in Marin County.
Watershed Stewardship and Naturalist Walk
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Become a steward of the Mt Tamalpais Watershed! Join our work day and naturalist walk.

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Hypogymnia schizidiata lichen.
Lichen & Friends Bioblitz
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Join us on Mt. Tamalpais for a naturalist adventure!

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Hypogymnia schizidiata lichen.
Lichen & Friends Bioblitz
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Join us on Mt. Tamalpais for a naturalist adventure!

Register
Friends taking photos at Rock Spring
Membership Event: Forest Health Walk at Rock Spring
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Join us and our One Tam partners for a walk to various forest health restoration sites on the Rock Spring trail in Mt. Tamalpais State Park!

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Volunteers at Work
Invasive Plant Patrol
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Hiking with a mission – help find and remove new infestations of invasive weeds while exploring the parks.

Registration Required
Volunteers at Work
Invasive Plant Patrol
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Hiking with a mission – help find and remove new infestations of invasive weeds while exploring the parks.

Registration Required
Habitat Restoration in Tennessee Valley
Habitat Restoration Team
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Help restore and protect critical natural areas from the Marin Headlands to Bolinas Ridge.

Registration Required
Habitat Restoration in Tennessee Valley
Habitat Restoration Team
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Help restore and protect critical natural areas from the Marin Headlands to Bolinas Ridge.

Registration Required
A grove in Roy's Redwoods.
One Tam Member Event: Roy's Redwoods Walk
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Tour the restoration work at Roy's Redwoods, a special old-growth redwood grove. 

REGISTER
Volunteers at Work
Invasive Plant Patrol
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Hiking with a mission – help find and remove new infestations of invasive weeds while exploring the parks.

Registration Required

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