Marin County Parks and Open Space Department

Are you interested in community service? Do you want to learn about the plants and animals that inhabit our lands? Would you like to go on a ranger-guided hike? We have something for everyone, some days and most weekends, all year long.

Naturalist Outings

Community Volunteer Days


Find out what’s happening in Parks. MORE

ranger events

Go on a guided hike, attend a campfire. MORE


Become a volunteer. Help care for our lands. MORE

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