One Tam

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.

Become a community scientist and help study our local bees!

Become a community scientist and help study our local bees!

Become a community scientist and help study our local bees!

Become a community scientist and help study our local bees!

Celebrate the City Nature Challenge and Earth Week by helping to document the diversity of life springing up at Bon Tempe's recent prescribed burn site. Led by local botanists and experts from State Parks, we will document all of the life we encounter using iNaturalist.

Join us on Earth Day to give back to Mt. Tam by pulling invasive species and picking up trash!