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Irvine Ranch

Irvine Ranch
Irvine Ranch. Photo by S. Francis

Irvine Ranch contains a remarkably complete stratigraphic succession ranging in age from late Cretaceous (80 million years ago) to the present. The primary biological features at the site include coastal sage scrub and chaparral communities, including rare Tecate cypress woodlands.

Location: Orange County, CA

Year designated: 2006

Acres: 36,398

Ownership: Federal, State, County, Municipal

For additional information see:


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Please remember, National Natural Landmarks (NNLs) are not national parks. NNL status does not indicate public ownership, and many sites are not open for visitation.

Last Updated: June 28, 2012