Space is limited for the Sept. 29 anniversary celebration and grand opening of the Robert C. Kirkwood Entrance at Castle Rock State Park. Don't miss out!

Did you know that 2018 marks the 50th Anniversary of Castle Rock State Park? Don't miss out on great events and volunteer opportunities. Sign up to receive communications from Sempervirens Fund so you can stay updated on the many ways you can celebrate Castle Rock State Park's 50th Anniversary!

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Since our founders began in 1900, Sempervirens Fund has protected more than 34,000 acres of redwood forest. We hold in our hearts and minds the founders’ experience of what thrived here – and what can be restored through proper stewardship.

Like our founders, we work passionately to protect, connect and restore the redwood forests into a vast and vibrant landscape that can support people and wildlife for countless generations to come.

In 1968, Sempervirens Fund helped establish Castle Rock State Park. Today, the park encompasses 5,242 acres, boasts 34 miles of trail and contains some of the best bouldering routes in California.