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Bioblitz at Gary Giacomini and French Ranch Preserves - Hosted by Marin County Parks and One Tam
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Join Marin County Parks and One Tam at the scenic Gary Giacomini and French Ranch Preserves as we try to identify and document every living species we see! Hone your naturalist skills, learn to use the iNaturalist smartphone app, and contribute valuable data about Mt. Tam's biodiversity.

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Cycle Crissy Field!
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A family-friendly bike trip around Crissy Field and the Presidio Main Post!

Bioblitz at Roy's Redwoods - Hosted by Marin County Parks and One Tam
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Join Marin County Parks and One Tam at the scenic Roy's Redwoods Preserve as we try to identify and document every living species we see! Hone your naturalist skills, learned to use the iNaturalist smartphone app, and contribute valuable data about our region's biodiversity.

Register Now
Crissy Field activities
Family-Friendly Bike Ride: Presidio 101
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Join a Presidio Park Ranger and Presidio Trust guide on this gentle four-mile bike ride.

Birding 101
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Explore the shore of Rodeo Lagoon with docent Jane Haley and enjoy the winter birds.

Florence Williams at Book Passage in Corte Madera - "The Nature Fix"
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In this informative and entertaining account, Williams investigates cutting-edge research as she travels to frafrant cypress forests in Korea to meet the rangers who administer "forest healing programs", to the green hills of Scotland and its "ecotherapeutic" approach to caring for the mentally ill, to a river trip in Idaho with Iraqi vets suffering from PTSD, to the West Virginia mountains where she discovers how being outside helps children with ADHD.

Bootjack Broom Bust - Hosted by California State Parks and One Tam
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Join One Tam for a morning of habitat restoration! We will be removing invasive French broom and other weeds near the scenic Bootjack Trail to make more space for diverse native species.

Fort Point National Historic Site underneath the Golden Gate Bridge
Fort Point History Talk

Join our Park Rangers in learning Fort Point's History in this 15 minute long talk. The program is accessible. The times of the program are 11:30 a.m., 1:30 p.m., and 2:30 p.m. 

The Buffalo Soliders
Buffalo Soldiers: Gone but Not Forgotten
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During this easy two-mile walk, hear about the challenges and triumphs of the African American "Buffalo Soldiers" during a time of overt racism and prejudice.

Habitat Restoration at Creekside Marsh - Hosted by Marin County Parks and One Tam
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Come join this community-based effort to install a diversity of native plants and improve animal habitat at a site once dominated by weeds! We will be mulching, planting, and/ or weeding next to a tidal marsh with a view of Mt. Tam.