Authors Ken Widner and Mike Lynch will return to the Rock for a three-day book signing event on Alcatraz Island, spotlighting their bestselling book “Alcatraz: The Last Escape.”

Stop by Mountain Lake to meet Presidio Wildlife Ecologists to learn how to coexist with coyotes.

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.

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

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

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