For the more information about the air resources of the National Park Service, please visit http://www.nature.nps.gov/air/.
Rocky Hollow-Falls Canyon Nature Preserve
Rocky Hollow-Falls Canyon Nature Preserve, located within Turkey Run State Park, contains forested areas of virgin beech-maple stands, steep sandstone gorges that harbor virgin boreal relict populations of eastern hemlock and Canada yew, and some of the largest black walnut in the Midwest.
Location: Parke County, IN
Year designated: 1974
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