National Natural Landmarks

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 ; Orange County, CA

Year designated: 2006

Acres: 36,398

Ownership: Federal, State, County, Municipal

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Please remember, National Natural Landmarks (NNLs) are not national parks. NNLs are owned by a variety of public and private entities and allowing visitation is at their discretion. Many NNL sites maintain public websites where additional information may be found.

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