POST protects open space on the Peninsula and in the South Bay for the benefit of all.

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Featured Content

Highways and Habitats: Building Wildlife Crossings in Coyote Valley

The Bay to Sea Trail: A Bold Vision You Can Start Enjoying Now

POST Appoints Gordon Clark as President

Forest Management 101: Preparing for a Healthier Future

POST Purchases and Permanently Protects Pescadero Ranch

What's New

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Bay Area Parks That Rock: Explore Where Geology Meets the Trail

April 28, 2025

POST's resident geologist shares her top pics for hiking destinations that double as a geology field trip.

Apr 28, 2025Apr 30, 2025By Irina Kogan

openspacetrust.org

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Photographer Vishal Subramanyan on the Magic of Mountain Lion Families

April 23, 2025

We sat down with Wildlife Photographer Vishal Subramanyan to hear the tale of how he crossed paths with a mountain lion family on a POST-owned property.

Apr 23, 2025Apr 29, 2025By Leslie Patron

openspacetrust.org

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From Biodiversity to Beach Access: POST Acts to Protect Iconic San Gregorio Ranch

POST moves to protect 195-acre San Gregorio Ranch for wildlife, public beach access & coastal conservation.

Apr 23, 2025Apr 24, 2025By Gordon Clark

openspacetrust.org

Tick bite prevention along the Cowell Purisima Trail - POST

Tick Bite Prevention – How To Not Be Eaten Alive by Ticks

March 23, 2025

With these easy steps, you can protect yourself against tick bites while visiting our open spaces. Read more!

Mar 23, 2025Apr 15, 2025By Leslie Patron

openspacetrust.org

Upcoming Events

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Volunteer
In Person

May

25

Sun

Volunteer Outdoors in Redwood City: Steward and Sketch at Bair Island

9:00 AM - 1:00 PM

Volunteer your time to help increase biodiversity at Bair Island National Wildlife Refuge!

Morning Hike at Skyline Ridge Open Space Preserve

Walks & Hikes
In Person

May

25

Sun

Morning Hike at Skyline Ridge Open Space Preserve

9:00 AM

Join POST on a guided hike at Skyline Ridge Open Space Preserve!

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Major Events
In Person

Now Until

May

25

Sun

Wild & Scenic Film Festival 2025 (Virtual Viewing)

11:59 PM

Join POST for the 2025 Wild & Scenic Film Festival — a collection of short films that highlight environmental issues from across the country and tell inspiring stories of people and their relationships to nature. This event will be both in-person and virtual.

Morning Hike at Bear Creek Redwoods

Walks & Hikes
In Person

May

30

Fri

Morning Hike at Bear Creek Redwoods

9:00 AM

Join POST on a guided hike in one of most recently-established open space preserves in the Bay area.

Hike at Calero County Park

Walks & Hikes
In Person

Jun

6

Fri

Hike at Calero County Park

9:30 AM

Join Peninsula Open Space Trust (POST) at Calero County Park, one of the region’s most beautiful oak woodlands!

Bair Island Volunteer Workday

Volunteer
In Person

Jun

7

Sat

Bair Island Volunteer Workday

9:00 AM

Join Peninsula Open Space Trust and San Francisco Bay Bird Observatory for this fun and unique opportunity to volunteer at Bair Island.

View All Events

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