One Tam

Join One Tam in our effort to save native grasslands from encroaching coastal scrub habitat!

Join the Environmental Forum of Marin and the City of Novato for a screening of the documentary "Rebels with a Cause: How a Battle over Land Changed our Landscape Forever"

Join us for a guided kayak tour during an exceptionally high king tide event to preview what will be the “new normal” for sea level at Bothin Marsh.

Come join this community-based effort to install a diversity of native plants and improve animal habitat at a site once dominated by weeds!

In light of the current tragedy in Butte County and poor air quality, we are shifting our Day of Thanks volunteer day and replacing it with Day of Thanks: Camp Fire Donation Drive. At the Mill Valley Community Center we are hosting a mini donation drive for the Camp Fire relief effort and a poster making session to welcome back the Marin County Fire Department.

Join the National Park Service and One Tam at s

Stroll through an old-growth redwood forest at sunrise, hear tall tales, soar in the sounds and smells, and hear the historical and ecological story of Muir Woods.

Stroll through an old-growth redwood forest at sunrise, hear tall tales, soar in the sounds and smells, and hear the historical and ecological story of Muir Woods.

Join docent Steffen on a strenuous five-mile dusk hike in search of owls struggling for supremacy in the old growth forest. Reservations required.

Join us to remove large but hidden stands of French Broom from the interior of Pine Point. Increase your knowledge of Marin's unique plant and animal life while contributing to their continued survival.