Giant City Geological Area
Located within Giant City State Park, Giant City Geological Area is an exceptional example of gravity sliding, consisting of massive joint-bounded sandstone blocks of Pennsylvanian age. The site supports a rich flora including xeric oak woodlands, oak-hickory and mesic forests dominated by sugar maple.
Year designated: 1980
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.