The GGNRA is turning 50 years old on October 27, 2022! Help us celebrate the 50th anniversary by rolling up your sleeves and giving the parks some TLC!

The GGNRA is turning 50 years old on October 27, 2022! Help us celebrate the 50th anniversary by rolling up your sleeves and giving the parks some TLC!

The One Tam Summit is a biannual program that brings together One Tam partner staff, scientists, students, and community members to learn about the health of Mt. Tamalpais in Marin County.

Learn about how sea level rise is impacting Bothin Marsh and what One Tam is doing to help.

Cultural festivals, traditions and holidays offer an opportunity to get together, share stories and food, and celebrate each other. Everyone is welcome to join and learn about celebrating Diwali & Dia de Muertos!

Learn to grow and care for native plants while helping to preserve and restore your national park.

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.

Become a Park Steward and help protect endangered species and restore sensitive habitat in Marin.

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