Tamalpais Lands Collaborative


Participants at the 2018 One Tam Science Summit: "Into the Woods."

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The unofficial symbol of Marin County, Mount Tamalpais encompasses some of the most beautiful, ecologically rich, and well-loved open spaces in the region. But today, the mountain and the agencies that protect it face mounting challenges.

A new partnership — the Tamalpais Lands Collaborative (TLC) — combines the expertise and resources of the mountain's four land management agencies with the Parks Conservancy to help ensure a healthy future for the mountain.

But the TLC is only part of the solution. The mountain needs you. One Tam, the TLC's community campaign, offers a way for everyone to support this land we cherish. Learn more at  onetam.org.


Project Status


Help us reach our goal of 100 new Golden Gate Keepers!

Start your monthly gift before February 18 and an anonymous donor will give an additional $150 to the parks! PLUS as an added bonus, you’ll get a free deck of Alcatraz Rule and Regulations playing cards.