National Natural Landmarks

Chazy Fossil Reef

Chazy Fossil Reef
Chazy Fossil Reef. Photo by C. Mehrtens.

Chazy Fossil Reef represents the oldest known occurrence of a biologically diverse fossil reef in the world, the earliest appearance of fossil coral in a reef environment, and the first documented example of the ecological principle of faunal succession.

Location: Clinton County, NY ; Clinton County, NY ; Grand Isle County, VT ; Grand Isle County, VT

Year designated: 2009

Acres: 1,567

Ownership: Federal, State, Private




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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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