List of National Natural Landmarks in Ohio

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List of National Natural Landmarks in Ohio Map all coordinates using: OpenStreetMap  

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From List of National Natural Landmarks, these are the National Natural Landmarks in Ohio . There are 23 in total.

NameImageDateLocationCountyOwnershipDescription
1 Arthur B. Williams Memorial Woods 1974 41°33′44″N81°25′36″W / 41.562282°N 81.426792°W / 41.562282; -81.426792 (Arthur B. Williams Memorial Woods) Cuyahoga municipalA remarkably pristine remnant beech-maple forest
2 Blacklick Woods Blacklick Woods Winter.jpg 1974 39°56′14″N82°48′28″W / 39.937222°N 82.807778°W / 39.937222; -82.807778 (Blacklick Woods) Fairfield countyAn outstanding example of relatively undisturbed, old-growth beech-maple and swamp forest communities
3 Brown's Lake Bog Brown Lake Bog.jpg 1967 40°40′51″N82°03′45″W / 40.6809°N 82.0624°W / 40.6809; -82.0624 (Brown's Lake Bog) Wayne privateOne of the few well-preserved, virgin boreal acid bogs remaining in a region where wetlands have been drained for agricultural use.
4 Buzzardroost Rock, Lynx Prairie, The Wilderness LynxPrairie.JPG 1967 38°45′34″N83°24′25″W / 38.759381°N 83.407013°W / 38.759381; -83.407013 (Lynx Prairie) Adams privateSupports many rare or uncommon species and it has an almost 50- year history of scientific observations.
5 Cedar Bog Cedar Bog Ohio Trail.JPG 1967 40°03′34″N83°47′44″W / 40.059444°N 83.795556°W / 40.059444; -83.795556 (Cedar Bog) Champaign stateAn excellent example of a marl swamp. Part of Cedar Bog State Nature Preserve.
6 Clear Fork Gorge Clear Fork Gorge from Mohican State Park Gorge Overlook.jpg 1967 40°36′40″N82°17′13″W / 40.610982°N 82.286827°W / 40.610982; -82.286827 (Clear Fork Gorge) Ashland stateClearly illustrates evidence of stream reversal due to the Wisconsin glacier. Located in Mohican State Park.
7 Clifton Gorge Clifton Gorge P4260050.jpg 1967 39°47′38″N83°49′53″W / 39.793903°N 83.831525°W / 39.793903; -83.831525 (Clifton Gorge) Greene stateExemplary of interglacial and postglacial canyon-cutting into the dolomites of the Niagara Escarpment. Part of Clifton Gorge State Nature Preserve.
8 Crall Woods 1974 41°01′42″N82°26′04″W / 41.028219°N 82.434376°W / 41.028219; -82.434376 (Crall Woods) Ashland privateA near-virgin remnant of maple-basswood-beech forest-type.
9 Cranberry Bog Cranberry Bog Sign.jpg 1968 39°55′54″N82°28′06″W / 39.931545°N 82.468232°W / 39.931545; -82.468232 (Cranberry Bog) Licking stateThe only known bog of its type in existence. Part of Cranberry Bog State Nature Preserve.
10 Dysart Woods Dysart Woods.jpg 1967 39°59′05″N80°59′51″W / 39.9846°N 80.9976°W / 39.9846; -80.9976 (Dysart Woods) Belmont stateOne of the finest remaining examples of the white oak forests of eastern Ohio. Managed by Ohio University.
11 Fort Hill State Memorial Fort Hill State Memorial.JPG 1974 Hillsboro 39°06′47″N83°24′23″W / 39.1131°N 83.4063°W / 39.1131; -83.4063 (Fort Hill State Memorial) Highland stateExcellent outcrops of Silurian, Devonian, and Mississippian sedimentary bedrock and a natural bridge.
12 Glacial Grooves State Memorial Glacial Grooves State Monument - Kellys Island, Ohio.jpg 1967 41°36′59″N82°42′23″W / 41.616304°N 82.70652°W / 41.616304; -82.70652 (Glacial Grooves State Memorial) Erie stateVery large limestone glacial grooves.
13 Glen Helen Natural Area Orators Mound.jpg 1965 39°48′15″N83°52′54″W / 39.804125°N 83.881697°W / 39.804125; -83.881697 (Glen Helen Natural Area) Greene privateIncludes a waterfall that carved a large travertine bowl around its pool.
14 Goll Woods Tiffin River at Goll Woods State Nature Preserve in Ohio.jpg 1974 41°33′15″N84°21′42″W / 41.554294°N 84.361738°W / 41.554294; -84.361738 (Goll Woods) Fulton stateOne of the best remaining examples of an oak-hickory dominated forest in Ohio. Part of Goll Woods State Nature Preserve.
15 Hazelwood Botanical Preserve 1974 Hamilton stateHighly detailed study of the site's plant ecology was published in 1929. Managed by the University of Cincinnati.
16 Highbanks Natural Area Highbank Park Works from crossing.jpg 1980 40°08′38″N83°01′42″W / 40.143889°N 83.028333°W / 40.143889; -83.028333 (Highbanks Natural Area) Delaware, Franklin countyA forested bluff overlooking the Olentangy River.
17 Holden Natural Area 1967 Geauga, Lake privateA complex of three natural areas.
18 Hueston Woods Hueston Woods.jpg 1967 39°34′21″N84°44′29″W / 39.5725°N 84.741389°W / 39.5725; -84.741389 (Hueston Woods) Butler, Preble stateA noteworthy example of beech-maple climax forest that has never been cut. Located in Hueston Woods State Park.
19 Mantua Swamp 1976 41°16′49″N81°12′41″W / 41.280278°N 81.211389°W / 41.280278; -81.211389 (Mantua Swamp) Portage privateContains many different wetland communities.
20 Mentor Marsh Mentor Marsh Nature Preserve (9594889265).jpg 1964 41°43′45″N81°18′20″W / 41.729164°N 81.305492°W / 41.729164; -81.305492 (Mentor Marsh) Lake stateConsists of marsh vegetation, aquatic plants, swamp and bottomland forest, and upland forest. Part of Mentor Marsh State Nature Preserve.
21 Serpent Mound Cryptoexplosive Structure Serpent Mound Crater.jpg 1980 39°02′00″N83°24′00″W / 39.033333°N 83.4°W / 39.033333; -83.4 (Serpent Mound crater) Adams, Highland, Pike privateA structure of undetermined origin exposed by differential erosion.
22 Tinker's Creek Gorge GENERAL VIEW LOOKING NORTH FROM TOWPATH, SHOWING WOOD-LINED TROUGH. AT RIGHT IS THE CANAL ROAD BRIDGE (1913). - Ohio and Erie Canal, Tinker's Creek Aqueduct, Canal Road, South HAER OHIO,18-VAVI,5-1.tif 1967 41°21′54″N81°36′35″W / 41.365°N 81.609722°W / 41.365; -81.609722 (Tinker's Creek Gorge) Cuyahoga municipalContains a virgin oak-hickory and virgin beech-maple-hemlock forest.
23 White Pine Bog Forest 1976 Geauga municipal, privateThe only remaining near-virgin remnant white pine boreal bog in Ohio.

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