This is a weekly volunteer program every Thursday and Saturday, 9 am-Noon. 
 

Help maintain Crissy Field and the Presidio shoreline. Projects include litter removal, weeding invasive plants, vegetation pruning, painting, historic site improvements, and trail maintenance. Help keep these popular public destinations well maintained for both local and worldwide visitors to use and enjoy.

Get the details.

The Golden Gate National Parks Volunteer Program is a cooperative parkwide effort of the Golden Gate National Parks Conservancy, the National Park Service, and the Presidio Trust.