Last updated: September 8, 2016
National Natural Landmarks
Glacial Grooves State Memorial
Glacial Grooves State Memorial, located on Kelleys Island, is made up of very large limestone glacial grooves that measure several feet in depth.
Location: Erie County, OH
Year designated: 1967
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.