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One Tam

Funeral bell mushroom on Mt Tam's Kent Lake area
Mt. Tam MycoBlitz
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Join Marin Municipal Water District and One Tam

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Smoky-gilled hypholoma mushroom
One Tam Member Outing: Mushrooms of Mt. Tam
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Join us for an exploratory stroll into the different habitats and rich diversity around Lake Lagunitas at the peak of Mt. Tam’s mushroom season.  

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Mount Tamalpais at sunset
CANCELED: Winter Solstice Sunset Gathering
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Join our winter solstice gathering atop Mt. Tam!

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Bobcat
CANCELED: One Tam: Wildlife Picture Index Workshop
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During this event, we will teach you about the Wildlife Picture Index (WPI) and you will participate in the cataloging and identification of wildlife.

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Bobcat
CANCELED: One Tam: Wildlife Picture Index Workshop
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During this event, we will teach you about the Wildlife Picture Index (WPI) and you will participate in the cataloging and identification of wildlife.

Register Now
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(CANCELED) Climate Change, Fire, and Grassland Restoration - Hosted by California State Parks and One Tam
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Join us to learn about climate change impacts to the Bay Area and Mt. Tam!

Bobcat
One Tam: Wildlife Picture Index Workshop
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During this event, we will teach you about the Wildlife Picture Index (WPI) and you will participate in the cataloging and identification of wildlife.

Register Now
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Nature Space Kayak Tour: Mill Valley’s Living Shoreline
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Spend a morning kayaking with ecologist Peter Baye, an expert on the marshes in Richardson Bay.

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Members of One Tam take a guided walk
RESCHEDULED: Guided Hike to Honor the 75th Anniversary of the US Navy PBM-5 Mariner Crash on Mt. Tam
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Join MMWD Ranger, Matt Cerkel, for a historical hike to the PBM-5 Mariner Crash site on Mt. Tam.

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Habitat Restoration on Bolinas Ridge - Hosted by California State Parks and One Tam
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Did you know that some grasslands on Mt. Tam are shrinking? Join our efforts to maintain these important areas!