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Found 2431 Results

Scurfy Twiglet mushrooms growing in the winter.
Fungus Fair at Presidio Tunnel Tops
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Join us outside the Field Station at Presidio Tunnel Tops explore the weird and wonderful world of fungus!

A woman stands amidst towering redwood trees in a forest.
"Giants Rising" Film Screening
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Join us for a screening of the film, "Giants Rising" in Marin City.

Registration Required
Bird's-eye view of Lake Lagunitas in Marin County.
Watershed Stewardship with Marin Water
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Become a steward of the Mt Tamalpais Watershed! 

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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.

REGISTER
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.

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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