For the more information about the air resources of the National Park Service, please visit http://www.nature.nps.gov/air/.
Ohio Coral Reef (Falls of the Ohio)
Within the Ohio River, the Ohio Coral Reef is a classic example of a Silurian and Devonian coral community. The site is the type locality for a number of coral species and nearly 900 nominal species have been founded on specimens collected here.
Year designated: 1966
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