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Sulfur tuft mushroom found in the Golden Gate National Parks.

Up Close: Lichens and Forests Bioblitz at Samuel P. Taylor State Park

Fri, Nov 10, 2023, 11:00am - 1:30pm

Join One Tam at Samuel P. Taylor State Park for a nature and science adventure!

Forested surroundings of Redwood Creek Trail

(CANCELED) Rock Spring Trail Hike on Mt. Tam

Tue, Sep 26, 2023, 9:30am - 12:00pm

Learn about work happening to manage, protect and restore the unique and rare flora on Mt. Tamalpais. This is a One Tam member event - join us to learn more about supporting One Tam!

Redwood Creek Trail Restoration Tour

Wed, Oct 25, 2023, 10:00am - 12:00pm

Hike the stunning Redwood Creek Trail on Mt. Tamalpais with One Tam partner staff. This is a One Tam member event - join us to learn more!

Children watching an astronomer adjust a telescope on the Presidio Main Lawn for stargazing

San Francisco Amateur Astronomers' Star Parties

Meadows at Presidio Tunnel Tops

Come join the San Francisco Amateur Astronomers for free public stargazing of the Moon, planets, globular clusters and more!

Sunlight shines through canopy at Muir Woods

A Walk in the Redwoods: The Civilian Conservation Corps at Muir Woods

Sun, Oct 22, 2023, 4:00 - 6:00pm

Muir Woods Visitor Center

Join this evening walk at Muir Woods National Monument to commemorate of the 90th anniversary of the New Deal and the Civilian Conservation Corps, one of earliest and most popular New Deal “relief programs.”