How can a 50-ton gun simply disappear? Learn this and other facts while helping load and aim the last operational gun of its kind.

Take a break from the classroom in the great outdoors with Teens on Trails!

Help keep Ocean Beach and our San Francisco coastline beautiful, clean, and safe for all.

Join the Golden Gate Trail Crew and help repair, maintain and enhance trails in the Golden Gate National 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.

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

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

Help restore and maintain historic landscapes and cultural resources along the shoreline of San Francisco.

Help with vegetation management and site improvements at Sutro Heights and along the San Francisco shoreline.