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  • Join us for Outstanding in the Field
    A spectacular dinner in support of One Tam, 10/31/21
    Learn more and buy tickets
    Photo: Monica Stafford/One Tam
  • The Tamalpais Bee Lab Is Back!
    Sign up for a volunteer event this fall!
    Photo: Sara Leon Guerrero
  • Support One Tam
    to care for Mt. Tam
    Join One Tam today
    for a healthy Mt. Tam tomorrow
    Join us
    Photo by Lieven Leroy
  • Casual in Nature:

    Wildlife Picture Index Photo Exhibit

    Visit the virtual exhibit
    Photo: One Tam
  • On the Lookout for Invasive Species
    Early Detection Team releases
    report on findings and response
    Learn about our work
    Photo: Allison Titus/ Parks Conservancy
  • Interactive Marin Park Access Map
    Park status information from
    our five partner agencies
    Open The Map
    Photo: Lee Jester
Explore
Explore

Learn about Mt. Tam and get trail tips

Support
Support

Join One Tam to support our work and your mountain

Volunteer
Volunteer

Get involved in habitat restoration, commuity science, and more!

Events
Events

See all One Tam partner events

One Mountain, One Team

With its sweeping views, miles of trails, and ancient forests, Mt. Tam is a beloved local treasure. But the mountain also faces many challenges such as invasive weeds, forest diseases,
and the effects of climate change. 

The One Tam partnership mobilizes the resources of the National Park Service, California State Parks, The Marin Municipal Water District, Marin County Parks and Golden Gate National Parks Conservancy to ensure a vibrant future for Mt. Tamalpais. 

Join Us!

California State Parks
Marin County Parks
Golden Gate National Parks Conservancy
Marin Municipal Water District
National Park Service

Upcoming Events

 
Tamalpais Bee Lab Event
Source: One Tam Calendar

One Tam is excited to announce the return of the Tamalpais Bee Lab! 

 
All About Oaks
Source: Marin County Parks
Deer Island Preserve
Sunday, October 24, 2021, 10am – 2pm
 
Tamalpais Bee Lab Event
Source: One Tam Calendar

One Tam is excited to announce the return of the Tamalpais Bee Lab! 

 
Lucas Valley Poor Farm and Cemetery
Source: Marin County Parks
Lucas Valley Field Office
Saturday, October 30, 2021, 2 – 3:30pm
 
Jeepers Jack o Lanterns
Source: Marin County Parks
Paradise Beach Park
Saturday, October 30, 2021, 11am – 1pm
 
Lucas Valley Poor Farm and Cemetery
Source: Marin County Parks
Lucas Valley Field Office
Saturday, October 30, 2021, 12 – 2pm
 
Birds of Abbotts Lagoon
Source: Marin County Parks
Point Reyes National Seashore
Sunday, October 31, 2021, 10am – 2pm
 
Movie in the Park! Featuring Pixar's Coco
Source: Marin County Parks
Stafford Lake Park
Monday, November 1, 2021, 6 – 8:30pm
 
Coffee With A Ranger
Source: Marin County Parks
Ring Mountain Preserve
Wednesday, November 10, 2021, 8 – 10am
 
San Geronimo Ridge
Source: Marin County Parks
Gary Giacomini Preserve
Wednesday, November 10, 2021, 9am – 2pm
 
Sunset Hike to the Top
Source: Marin County Parks
Mount Burdell Preserve
Saturday, November 13, 2021, 3:30 – 6:30pm
 
Learn to Skim Board
Source: Marin County Parks
Upton Beach
Saturday, November 13, 2021, 11am – 1pm
 
Birds at Rush Creek
Source: Marin County Parks
Rush Creek Preserve
Sunday, November 14, 2021, 10am – 2pm
 
Coffee With A Ranger
Source: Marin County Parks
King Mountain Preserve
Saturday, November 20, 2021, 8 – 10am

All Events

Featured Work

Wildlife Picture Index
The One Tam partner agencies are using motion-activated cameras to study wildlife on public lands around Mt. Tam.
Path beside the base of an enormous redwood tree
Roy’s Redwoods
Long loved by the San Geronimo Valley community, Roy’s Redwoods Open Space Preserve offers visitors an immersive experience in an old-growth redwood grove.
Bothin Marsh
With climate change and sea level rise, flooding is increasing in frequency and duration throughout Bothin Marsh - this project is creating a shared community vision for its future.

All Programs & Projects

What People Say

I walk out of this program with more perspective and a powerful mindset, to get out there and make a change. The One Tam LINC high school program made me realize that this is exactly what I want to do with my life: be outdoors and explore, while at the same time giving back to my community.
Nhi Nguyen
LINC 2018 Student
The mountain gives to all of us selflessly and constantly. The challenge is for each of us to consider in what way we can repay the generosity. Invent something, donate, pull weeds, shore up trails, volunteer with One Tam and you will become a Tamalpaian.
Peter Coyote
Co-author and Narrator, The Invisible Peak