For the more information about the air resources of the National Park Service, please visit http://www.nature.nps.gov/air/.
Tionesta Scenic and Research Natural Areas
The Tionesta Scenic and Research Natural Areas, located within the Allegheny National Forest, is the largest virgin forest in the hemlock-white pine/northern hardwood forest regions of North America.
Year designated: 1973
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