Comandante del Presidio
September 4, 2010
10-11:30 am
Join a ranger-led tour of the oldest building in San Francisco and for a Main Post stroll, as you learn about Comandante Moraga and the development of the Presidio in the 18th century.

Fort Funston Cleanup Day
September 4, 2010
9:30 AM
Location: Fort Funston, San Francisco
Bring dogs, friends, and family to help keep Fort Funston clean for everyone; held in conjunction with Fort Funston Dogwalkers.

Labor Day Weekend Hike - CANCELED
September 4, 2010
9:30 am-12:30 pm
Location: Marin County, Marin Headlands, Muir Beach
Join us on a moderate hike up the newly re-opened Dias Ridge Trail, aone of our best examples of skillful trail-building, and learn about California seasons and plant life.

Presidio Shoreline (Crissy Field & Area A)
September 4, 2010
Saturday, 9 am-Noon
Location: Crissy Field, Presidio of San Francisco
Volunteer and help keep Crissy Field and the Presidio Shoreline clean and free of invasive weeds.

Pier Crabbing
September 4, 2010
10 am-Noon
Location: Fort Point, San Francisco
Come learn about crabbing in the San Francisco Bay, then try your hand at it with our equipment.

Presidio Park Stewards
September 4, 2010
Saturday, 9 am-Noon
Location: Presidio of San Francisco
Help enhance rare native plant habitat and create important wildlife corridors in the Presidio of San Francisco.

Nike Missile Site Tour and Author Event
September 4, 2010
12:30-3:30 pm
Location: Marin County, Marin Headlands
Join historians John Martini and Stephen Haller, authors of "The Last Missile Site," for an in-depth look at this fascinating site...unique in the National Park Service.

The Last Gun
September 4, 2010
11 am-3 pm
Location: Presidio of San Francisco, San Francisco
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.

360 Degrees of Pacifica
September 4, 2010
9:30 (9 am breakfast)-3 pm
Location: Milagra Ridge, Mori Point, San Mateo County, Sweeney Ridge
Enjoy a grand tour of the Golden Gate National Parks sites in San Mateo County--Milagra Ridge, Mori Point, Sweeney Ridge--with Ranger George Durgerian.

Shipwrecks at the Golden Gate
September 4, 2010
11 am-Noon
Location: Lands End, San Francisco
On this moderately strenuous hike, see and learn about some of the ships that have perished upon the rocky cliffs of the Golden Gate.

Beginning Birding
September 5, 2010
9:30-11:30 am
Location: Marin County, Marin Headlands, Rodeo Lagoon/Valley
Explore the shore of Rodeo Lagoon with volunteer Jane Haley to discover what birds can be found here in the fall.

Meet the Author: Jennie Schacht, "Farmers' Market Desserts"
September 5, 2010
1-2:30 pm
Location: Crissy Field, Presidio of San Francisco, San Francisco
Meet Jennie Schacht, author of the scrumptious book "Farmers' Market Desserts," and sample some of the featured treats. at the Warming Hut. Get your copy signed by the author!

A Walk in the Presidio Forest
September 5, 2010
10 am-1 pm
Location: Presidio of San Francisco, San Francisco
Take a strenuous six-mile walk through the trees that the U.S Army planted over 100 years ago with a ranger who will share a historical narrative.

Battery Townsley Open House
September 5, 2010
Noon-4 pm
Location: Marin County, Marin Headlands
Battery Townsley, at Fort Cronkhite, was San Francisco's most extensive—and most secret—World War II military fortification. Come visit and explore this labyrinthine battery.

Coastal Defenses of San Francisco Bay
September 5, 2010
1:30-2:30 pm
Location: Marin County, Marin Headlands
Learn how the coastal defenses of San Francisco Bay have played an important part in major historical events from the Gold Rush to World War II.

Lighthouses of San Francisco Bay
September 5, 2010
11 am-Noon
Location: Marin County, Marin Headlands
Join us an illustrated talk about the men and women of the lighthouse service who directed hundreds of ships through the Golden Gate in the 19th century.

The Last Gun
September 5, 2010
11 am-3 pm
Location: Presidio of San Francisco, San Francisco
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.

Fort Baker Stewardship
September 6, 2010
Monday, 10 am-Noon
Location: Fort Baker, Marin County
Volunteer and help care for landscapes at historic Fort Baker.

Tennessee Valley Nursery & Stewardship
September 7, 2010
Tuesday, 10 am-Noon & 1-4 pm
Location: Marin County, Marin Headlands, Tennessee Valley
Volunteer at the Tennessee Valley Nursery and learn to grow and care for native plants.

Presidio Park Stewards
September 8, 2010
Wednesday, 9 am-Noon
Location: Presidio of San Francisco
Help enhance rare native plant habitat and create important wildlife corridors in the Presidio of San Francisco.