Question: What island is the National Natural Landmark in Florida landmark in the Treasure Coast region located on ?

text: List of National Natural Landmarks in Florida
National Natural Landmarks

The National Natural Landmarks (NNLs) in Florida include 18 of the almost 600 such landmarks in the United States. They cover areas of geological, biological and historical importance, and include springs, swamps, marshes and seashore. Several of the sites provide habitat for rare or endangered plant and animal species. The landmarks are located in 14 of the state's 67 counties. Four counties each contain all or part of two or more NNLs, while two landmarks is split between two counties. The first designation, Corkscrew Swamp Sanctuary, was made in 1964, while the most recent designation, Archbold Biological Station, was made in 1987. Natural Landmarks in Florida range from 593 to 14,000 acres (240.0 to 5,665.6 ha; 0.9 to 21.9 sq mi) in size. Owners include private individuals and several state and federal agencies. The National Natural Landmarks Program is administered by the National Park Service, a branch of the Department of the Interior. The National Park Service determines which properties meet NNL criteria and, after notifying the owners, makes nomination recommendations. The Secretary of the Interior reviews nominations and, based on a set of predetermined criteria, makes a decision on NNL designation or a determination of eligibility for designation. Both public and privately owned properties can be designated as NNLs.
Name Date Location County Ownership Description
Archbold Biological Station May 1987 27°10′50″N 81°21′0″W / 27.18056°N 81.35000°W / 27.18056 ; -81.35000 ( Archbold Biological Station ) Highlands Private Protects the largest undisturbed tract of the Lake Wales Ridge
Big Cypress Bend October 1966 25°51′32″N 81°2′2″W / 25.85889°N 81.03389°W / 25.85889 ; -81.03389 ( Big Cypress Bend ) Collier State A part of Fakahatchee Strand Preserve State Park , it features the largest grove of royal palm trees in the country
Corkscrew Swamp Sanctuary March 1964 26°25′4.41″N 81°32′18.33″W / 26.4178917°N 81.5384250°W / 26.4178917 ; -81.5384250 ( Corkscrew Swamp ) Collier State , private Contains the nation 's largest remaining virgin strand of bald cypress trees
Devil 's Millhopper December 1974 29°42′25″N 82°23′42″W / 29.70694°N 82.39500°W / 29.70694 ; -82.39500 ( Devil 's Millhopper ) Alachua State A karst dry sinkhole located within the eponymous state park
Emeralda Marsh December 1974 28°58′1.46″N 81°48′13.88″W / 28.9670722°N 81.8038556°W / 28.9670722 ; -81.8038556 ( Emeralda Marsh ) Lake , Marion State , private This inland freshwater sawgrass marsh is also a popular birding area
Florida Caverns Natural Area December 1976 30°48′50″N 85°13′59″W / 30.81389°N 85.23306°W / 30.81389 ; -85.23306 ( Florida Caverns Natural Area ) Jackson State Eponymous state park protects Florida 's only publicly accessible cave . Winter home of the endangered Indiana bat
Ichetucknee Springs October 1971 29°58′2.47″N 82°46′33.82″W / 29.9673528°N 82.7760611°W / 29.9673528 ; -82.7760611 ( Ichetucknee Springs ) Columbia , Suwannee State Artisan spring , the state 's third largest , included in eponymous state park
Lignumvitae Key October 1968 24°54′7.18″N 80°41′57.56″W / 24.9019944°N 80.6993222°W / 24.9019944 ; -80.6993222 ( Lignumvitae Key ) Monroe State Located in an eponymous state park , contains the best preserved tropical hammock forest in the country
Manatee Springs December 1971 29°29′25.49″N 82°58′37.47″W / 29.4904139°N 82.9770750°W / 29.4904139 ; -82.9770750 ( Manatee Springs ) Levy State An eponymous state park surrounds the state 's sixth largest artisan spring
Osceola Research Natural Area December 1974 30°17′26″N 82°19′18″W / 30.29056°N 82.32167°W / 30.29056 ; -82.32167 ( Osceola Research Natural Area ) Baker Federal Isolated mixed hardwood forest featuring virgin bald cypress strands . A portion of Osceola National Forest
Paynes Prairie December 1974 29°34′1″N 82°22′52″W / 29.56694°N 82.38111°W / 29.56694 ; -82.38111 ( Paynes Prairie ) Alachua State , private Freshwater marsh in one of the state 's largest sinks . Majority of the site included in Paynes Prairie Preserve State Park
Rainbow Springs October 1971 29°6′9.57″N 82°26′13.38″W / 29.1026583°N 82.4370500°W / 29.1026583 ; -82.4370500 ( Rainbow Springs ) Marion State Florida 's second largest artisan spring . Part of an eponymous state park
Reed Wilderness Seashore Sanctuary November 1967 27°2′25.64″N 80°6′49.47″W / 27.0404556°N 80.1137417°W / 27.0404556 ; -80.1137417 ( Reed Wilderness Seashore Sanctuary ) Martin Federal A part of Hobe Sound National Wildlife Refuge , protects the largest undisturbed stretch of Florida 's Atlantic coast . A nesting site of the loggerhead turtle
San Felasco Hammock December 1974 29°43′44″N 82°26′31″W / 29.72889°N 82.44194°W / 29.72889 ; -82.44194 ( San Felasco Hammock ) Alachua State , private Mainly located in San Felasco Hammock Preserve State Park , contains a diverse forest environment
Silver Springs October 1971 29°12′59″N 82°3′28″W / 29.21639°N 82.05778°W / 29.21639 ; -82.05778 ( Silver Springs ) Marion Private Eponymous state park surrounds the state 's largest artesian spring
Torreya State Park December 1976 30°34′8″N 84°56′53″W / 30.56889°N 84.94806°W / 30.56889 ; -84.94806 ( Torreya State Park ) Liberty State Steep ravines cut through this eponymous state park . Home of endangered plants such as the Florida yew
Waccasassa Bay Preserve State Park December 1976 29°10′44.37″N 82°55′50.31″W / 29.1789917°N 82.9306417°W / 29.1789917 ; -82.9306417 ( Waccasassa Bay Preserve State Park ) Levy State Brackish mangrove protected in an eponymous state park
Wakulla Springs October 1966 30°13′58″N 84°17′32″W / 30.23278°N 84.29222°W / 30.23278 ; -84.29222 ( Wakulla Springs ) Wakulla State Located in Edward Ball Wakulla Springs State Park , includes the state 's deepest artesian spring