Conejo Open Space Conservation Agency

09/17/2026 - Trail Closure!  The Los Robles Trail will be closed for repairs near its intersection with the Ventu Park Fire Road from September 21 to October 5, 2026. During this period, through hiking and riding between the Spring Canyon and Rosewood Trails will not be possible. However, out‑and‑back trips to points before the construction area will still be feasible. Thank you for your patience and understanding!

08/13/2026 - Access to the Hidden Rim Trail and the Hill Canyon Fire Road from the north side of Rancho Conejo Blvd. is anticipated to be restored soon!  

Monthly Trail Work Opportunities!
In addition to our Fall and Spring trail workdays, we’re launching a monthly trail work program.  The program will take on smaller projects with crews of approximately 20 volunteers. The expansion will provide more opportunities for community members to participate in trail work projects and provide COSCA the opportunity to address a variety of trail projects throughout our open space and trail system.

If you’re interested in participating, please register for events through the Conejo Recreation and Park District at www.crpd.org. Click the pink “Registration” button and search for “COSCA” to find event dates and locations. Each event will have sign-up limits so the number of volunteers is matched to the needs of the project. If you’re interested in getting alerts for upcoming volunteer opportunities, sign up with COSCA’s partners at www.cosf.org.

Leave No Trace Guidelines
Keeping our community open spaces clean, healthy, safe, and enjoyable takes a community-wide effort. By following a few simple guidelines, you can be part of COSCA's open space care team. For tips on outdoor ethics, see our Leave No Trace page.