One Tam

Go on a 5.5 mile guided hike with Hillary Colyer, State Park Interpreter for Mount Tam State Park, and learn about the incredible life that Mt. Tam has to offer this spring!

Hiking with a mission – help find and remove new infestations of invasive weeds while exploring the parks.

Join us on our free evening tour to explore what keeps the redwood forest awake when we go to sleep. Step outside your comfort zone and into the ancient, nocturnal setting of Muir Woods for this two-hour, two-mile walk.

Celebrate Fungus February by helping to document the diversity of fungi at Roy's Redwoods! Led by local mycologists, we will document and collect any fungi we encounter using iNaturalist.

Hiking with a mission – help find and remove new infestations of invasive weeds while exploring the parks.

Hiking with a mission – help find and remove new infestations of invasive weeds while exploring the parks.

Help restore and protect critical natural areas from the Marin Headlands to Bolinas Ridge.

Hiking with a mission – help find and remove new infestations of invasive weeds while exploring the parks.

Hiking with a mission – help find and remove new infestations of invasive weeds while exploring the parks.

Hiking with a mission – help find and remove new infestations of invasive weeds while exploring the parks.