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The well at El Polin Spring
Membership Event: City Nature Challenge Bioblitz at El Polin Spring
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Explore El Polin Spring in the Presidio with us for a naturalist adventure and celebration of biodiversity! A bioblitz is a quick, intense survey of the species present. Hone your observation skills, become a field biologist for the day, and enjoy some nature in the city and friends!

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Habitat Restoration in Tennessee Valley
Habitat Restoration Team
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Help restore and protect critical natural areas from the Marin Headlands to Bolinas Ridge.

Registration Required
Habitat Restoration in Tennessee Valley
Habitat Restoration Team
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Help restore and protect critical natural areas from the Marin Headlands to Bolinas Ridge.

Registration Required
Habitat Restoration in Tennessee Valley
Habitat Restoration Team
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Help restore and protect critical natural areas from the Marin Headlands to Bolinas Ridge.

Registration Required
Habitat Restoration in Tennessee Valley
Habitat Restoration Team
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Help restore and protect critical natural areas from the Marin Headlands to Bolinas Ridge.

Registration Required
Volunteers at Work
Invasive Plant Patrol
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Hiking with a mission – help find and remove new infestations of invasive weeds while exploring the parks.

Registration Required
Volunteers at Work
Invasive Plant Patrol
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Hiking with a mission – help find and remove new infestations of invasive weeds while exploring the parks.

Registration Required
Volunteer at work in Lands End
(CANCELED) San Francisco Habitat Stewards
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Become a Habitat Steward and help restore unique San Francisco coastal habitat.

Registration Required
Volunteer at work in Lands End
(CANCELED) San Francisco Habitat Stewards
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Become a Habitat Steward and help restore unique San Francisco coastal habitat.

Registration Required
The 9th Cavalry at Crissy Field
Membership Event: The Legacy of the Buffalo Soldiers
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Dive into the history of the Buffalo Soldiers and other accounts of Black history with retired NPS ranger Rik Penn.

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