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  • 2022 One Tam Summit:
    Peak Health
    Join Us
    Photo: Steelblue
  • Support One Tam
    to care for Mt. Tam
    Join One Tam today
    for a healthy Mt. Tam tomorrow
    Join us
    Photo by Lieven Leroy
  • On the Lookout for Invasive Species
    Early Detection Team releases
    report on findings and response
    Learn about our work
    Photo: Allison Titus/ Parks Conservancy
Explore
Explore

Learn about Mt. Tamalpais and get trail tips

Support
Support

Join One Tam to support our work and your mountain

Volunteer
Volunteer

Get involved in habitat restoration, community 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. Tamalpais 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

 
CANCELLED - Kids Holiday Glow Crafts
Source: Marin County Parks
Saturday, December 10, 2022, 12 – 2pm
 
CANCELLED - Family Walk: Blackstone Canyon
Source: Marin County Parks
Sunday, December 11, 2022, 10am – 1pm
 
Wreath-Making Workshop
Source: Marin County Parks
Point Reyes Playground
Sunday, December 11, 2022, 11am – 1pm
 
Coffee with a Ranger
Source: Marin County Parks
Pacheco Valle Preserve
Sunday, December 11, 2022, 7:30 – 10am
 
CANCELLED - Senior Stroll: Birds at Las Gallinas
Source: Marin County Parks
Tuesday, December 13, 2022, 10am – 12pm
 
CSA #20 Advisory Board Special Meeting
Source: Marin County Parks
Tuesday, December 13, 2022, 2 – 3pm
 
Introduction to Kayaking
Source: Marin County Parks
McNears Beach Park
Friday, December 16, 2022, 9am – 12pm
 
Muir Woods Maintenance
Source: One Tam Calendar

The boardwalk that mea

 
Mt. Tamalpais Habitat Restoration
Marin Water

 
CANCELLED - Estero Trail
Source: Marin County Parks
Sunday, December 18, 2022, 10am – 2pm
 
Mt. Tamalpais Habitat Restoration
Marin Water

Location: Mount Tamalpais Watershed, Phoenix Lake

 
History Walk
Source: Marin County Parks
McNears Beach Park
Tuesday, December 20, 2022, 9:30 – 11:30am
 
CANCELLED - Winter on the Mountain
Source: Marin County Parks
Wednesday, December 21, 2022, 10am – 2pm
 
50th Anniversary: Salmon of San Geronimo Valley
Source: Marin County Parks
Leo Cronin T Parking Lot
Wednesday, December 21, 2022, 11am – 12:30pm
 
Solstice Sunrise Walk
Source: Marin County Parks
Deer Island Preserve
Wednesday, December 21, 2022, 7 – 8:15am
 
Coffee with a Ranger
Source: Marin County Parks
McInnis Park
Saturday, January 7, 2023, 10am – 12pm
 
Mt. Tamalpais Habitat Restoration
Marin Water

Location: Mount Tamalpais Watershed, Phoenix Lake

 
Mt. Tamalpais Habitat Restoration
Marin Water

Location: Mount Tamalpais Watershed, Phoenix Lake

 
Mt. Tamalpais Habitat Restoration
Marin Water

Location: Mount Tamalpais Watershed, Phoenix Lake

 
Mt. Tamalpais Habitat Restoration
Marin Water

Location: Mount Tamalpais Watershed, Phoenix Lake

All Events

Featured Work

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.
Monarch Habitat Enhancement
One Tam partners are now working to identify monarch butterfly overwintering and breeding habitat for restoration in the region, and to plan enhancement efforts.
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