Conejo Open Space Foundation
  • About Us
    • Our Story…
      • Our Story
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    • History…
      • History of the Conejo Open Space
      • Historic Conejo Open Space Promotional Videos
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    • Open Space Programs
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    • Conejo Open Space Challenge 2026: March 1 to May 31
    • Speaker Series
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    • Trails Education Days for 4th Graders
      • Video Overview
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    • “Four Seasons” photo contest
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    • Scholarships for Environmental Studies
      • How to Apply
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  • Volunteering
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      • Adopt-A-Trail Report Form
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  • Explore Open Spaces
    • Open Space Trails and Maps
      • Map Overview
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      • Conejo Canyons Open Space (Western Plateau)
      • Dos Vientos and Rancho Potrero Open Spaces
      • Lang Ranch, Woodridge and Oakbrook Regional Park
      • Los Robles Open Space area
      • Wildwood Park
      • Other Trails including North Ranch
      • List of Maps
    • Things to do and see
      • Open Space Activities
      • Native Plants
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      • Wildlife
      • Flora and Fauna Videos
    • Be Prepared
    • Rules of the Trails

_Special Announcement

_Special Announcement Conejo OS Challenge

Photos from the 2024 Conejo Open Space Challenge

Here are some of the hundreds of photos of the Conejo Open Spaces that have been submitted so far from participants of the 2024 Conejo Open Space Challenge. These 48 images come from 20 people who have accepted the Challenge and are working their way through the ten designated trails. Read more

By Steve Clark, 2 years ago
_Special Announcement Accomplishments Environment Speaker Series Wildlife

Hummingbird expert Dr. Julie Morley explains how you can help these tiny birds—view her recorded webinar presentation here

Dr. Julie Morley’s talk focused on understanding hummingbirds’ biology and habits so people can cultivate safer and more welcoming habitats for them.

By Anne Russell, 2 years ago
_Special Announcement Conejo OS Challenge

The 2024 Conejo Open Space Challenge

Here’s your chance to explore some of the best trails in the Conejo Open Space that many people are not familiar with! From March 1st through May 31st the Conejo Open Space Conservation Agency (COSCA) is challenging mountain bikers, hikers, trail runners and equestrians of all ages to try out Read more

By Steve Clark, 2 years05/01/2024 ago
_Special Announcement Social Media ONLY

It’s New Map Monday in Lang Ranch: Woodridge Loop with Longer Options

Highlights Four possible routes of varying difficulty: 2.8 miles with 550′ of climbing for the Woodbridge Loop alone 4.1 miles with 750′ of climbing, starting in Wood Ranch 4.4 miles with 750′ of climbing, starting on Westlake Blvd. 6.7 miles with 1300′ of climbing, starting on Erbes Rd. The Woodridge Read more

By Steve Clark, 2 years04/01/2024 ago
_Special Announcement Social Media ONLY

It’s New Map Monday in Oakbrook/Lang Ranch: Sandstone Hills Trail

Highlights The rocky scenery is beautiful as the trail cuts across the towering and rugged south flank of Simi Peak and the Simi Hills View deposits from the Middle Miocene period (14 million years ago) and Upper Cretaceous period (100 million to 66 million years ago when the dinosaurs went Read more

By Steve Clark, 2 years03/25/2024 ago
Spring Trail Work Day 2024
_Special Announcement Accomplishments Trailwork

Spring Trail Work Day Improves Hill Canyon, Draws Enthusiastic Volunteers

The first. of COSCA’s two big trail work days drew over 65 volunteers to Hill Canyon to work on the trails there and battle invasive milk thistle and mustard. The Santa Monica Mountains Trails Council and Concerned Off-Road Bicyclists Association (CORBA) provided crew leaders, while Safe Passage Youth Foundation joined Read more

By Anne Russell, 2 years ago
_Special Announcement Newsletter

2024 Spring COSF Newsletter

The spring edition of the Conejo Open Space Foundation newsletter has been posted. In this edition… Conejo Canyons Bridge Nears Completion : COSF Scholarships Update : 2024 Conejo Open Space Challenge : Spotlight on Tom Becker : News in Brief : and more… View our Spring Conejo Open Space Newsletter.

By Steve Clark, 2 years03/20/2024 ago
_Special Announcement Social Media ONLY

It’s New Map Monday in Wildwood: Lizard Rock and Hidden Rim Trails Figure 8 Double Loop

Highlights From the Lizard Rock Trail, there are great views into three different canyons See the volcanic legacy of the Conejo Valley firsthand on the Stagecoach Bluff Trail Cross the new Conejo Canyons Vehicle Bridge, expected to be completed in late winter 2024 The Lizard Rock Trail is included in Read more

By Steve Clark, 2 years03/18/2024 ago
_Special Announcement Accomplishments Trailwork

Clearing the Eagle Point Trail in Wildwood during the January Trail Work Day

There was a great turnout at today’s COSCA monthly trailwork day on the Eagle Point Trail at Wildwood Regional Park! There were about 35 volunteers who worked to cut back brush and smooth this beautiful, hilly trail. If you would like to be notified about upcoming trailwork, please sign up Read more

By Steve Clark, 2 years01/27/2024 ago
_Special Announcement Conejo OS Challenge Safety Trails

New Conejo Canyons Vehicle Bridge to Open Soon: Videos of the Construction

By Steve Clark, 2 years01/15/2024 ago

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