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Alcatraz Island at Sunset
Membership Event: Behind the Scenes Look at Alcatraz Island
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Travel with us to Alcatraz Island, learn about it's exciting future, and get an insider's look into the history of former maximum-security prison.

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Volunteers work with manzanita cuttings
Presidio Nursery
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Learn to grow and care for native plants while helping to preserve and restore your national park.

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Volunteers work with manzanita cuttings
Presidio Nursery
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Learn to grow and care for native plants while helping to preserve and restore your national park.

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A group collects seed in a grassland. A volunteer holds a tray of seeds.
Marin Headlands Nursery
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Learn to grow and care for native plants while helping to preserve and restore your national park.

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A group collects seed in a grassland. A volunteer holds a tray of seeds.
Marin Headlands Nursery
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Learn to grow and care for native plants while helping to preserve and restore your national park.

Register Now
A group collects seed in a grassland. A volunteer holds a tray of seeds.
Marin Headlands Nursery
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Learn to grow and care for native plants while helping to preserve and restore your national park.

Register Now
Sulfur tuft mushroom found in the Golden Gate National Parks.
Up Close: Lichens and Forests Bioblitz at Tomales Bay State Park
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Join One Tam at Tomales Bay State Park for a nature and science adventure!

Sulfur tuft mushroom found in the Golden Gate National Parks.
Up Close: Lichens and Forests Bioblitz at Samuel P. Taylor State Park
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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
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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!

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