Highlights Oakbrook Vista Trail quickly gains elevation to give a good view over Oakbrook Regional Park and Lang Ranch Open Space to the north. You’ll get a great view of Albertson Motorway as it winds it’s way up the hills. The very rugged Little Sandstone Trail passes through what could Read more
Highlights This route is 4.9 miles long with about 800′ of ascent. The Twin Ponds, roughly half way along Vista Del Mar Trail. If there was a substantial amount of rain the preceding winter, there will be waterfowl in the ponds. The view is constantly changing on these hilly trails, Read more
Highlights This short out-and-back hike quickly gains elevation to give a good view over Oakbrook Regional Park and Lang Ranch Open Space to the north. You’ll get a great view of Albertson Motorway as it winds it’s way up the hills. In spring, the trail is lined with blooming purple Read more
CANCELED due to the weather: November 22 Trail Work. The following text is from the original announcement. Join the COSCA rangers and other enthusiastic volunteers on November 22 to help fix up the Park View Trail above Dos Vientos Community Park! If you’re looking for for some ways to get Read more
Highlights This route is 8.0 miles long with about 1300′ of elevation gain. There will be waterfowl in the Twin Ponds if there was a enough rain during the preceding winter to keep the ponds from drying up. The view is constantly changing on these hilly trails, overlooking Dos Vientos Read more
The fall edition of the Conejo Open Space Foundation newsletter has been posted. In this edition… Announcing Plantpalooza 2025 – October 11 : New COSCA ranger Will Haver : Summary of speaker event “Lions and fires and humans, Oh deer!” : Focus on Robin Bertolucci, our newest board member : Read more
The summer edition of the Conejo Open Space Foundation newsletter has been posted. In this edition… Grade 4 Trails Education Days summary and essay contest winners : Conejo Open Space Challenge wrap-up : Beware the goldspotted oak borer : Newest COSF board member Jessica Minucci : Spring photo contest winner Read more
The 2025 Trails Education Days provided lessons on open space for 1,080 Conejo 4th grade students from all 17 CVUSD elementary schools during the week of April 28. Writing Contest The students who participate in Trails Education Days are invited to enter a letter-writing contest to describe some of the things they Read more
Please join us for the live online presentation of “Lions and Fires and Humans, Oh Deer!” by ecologist Ellie Bolas. Currently a PhD candidate at the University of California Davis (UCD), Bolas will discuss how mule deer in the Santa Monica Mountains and Conejo Valley navigate a dynamic landscape of Read more
There are only a few days left until The Challenge ends this Saturday! That means there’s still time to check out two or three trails if you’re almost finished, or to cram in all ten if you haven’t started. Here are some more great photos submitted by the participants. Over Read more