1974 NNL Designations

Mount Mitchell State Park located in North Carolina was designated an NNL on May 30, 1974. Pictured is a photograph from the original evaluation.

NPS photo

In 2024 we recognized the Golden Anniversary of 71 NNL sites. These NNLs were officially designated when Secretary of the Interior, Rogers C.B. Morton, signed two batches of designation memos, the first on May 30, 1974 and the latter on December 2, 1974.

Sites Designated May 30, 1974

State	Landmark	Secretary Approval Date
Alabama	Beaverdam Creek Swamp	5/30/1974
Alabama	Dismals	5/30/1974
Alabama	Mobile-Tensaw River Bottomlands	5/30/1974
Arizona	Onyx Cave	5/30/1974
California	Anza-Borrego Desert State Park	5/30/1974
California	Nipomo Dunes-Point Sal Coastal Area	5/30/1974
California	San Felipe Creek Area	5/30/1974
Georgia	Camp E. F. Boyd Natural Area	5/30/1974
Georgia	Lewis Island Tract	5/30/1974
Idaho	Cassia Silent City Of Rocks	5/30/1974
Illinois	Funks Grove	5/30/1974
Illinois	LaRue-Pine Hills Ecological Area	5/30/1974
Indiana	Hoosier Prairie	5/30/1974
Indiana	Pioneer Mothers Memorial Forest	5/30/1974
Indiana	Shrader-Weaver Woods	5/30/1974
Kentucky	Henderson Sloughs	5/30/1974
Massachusetts	Hawley Bog	5/30/1974
Michigan	Dukes Research Natural Area	5/30/1974
New Mexico	Fort Stanton Cave	5/30/1974
New Mexico	Torgac Cave	5/30/1974
New York	Iona Island Marsh	5/30/1974
North Carolina	Green Swamp	5/30/1974
North Carolina	Long Hope Creek Spruce Bog	5/30/1974
North Carolina	Mount Jefferson State Natural Area	5/30/1974
North Carolina	Mount Mitchell State Park	5/30/1974
North Carolina	Nags Head Woods and Jockey's Ridge	5/30/1974
North Carolina	Piedmont Beech Natural Area	5/30/1974
North Carolina	Pilot Mountain	5/30/1974
North Carolina	Stone Mountain	5/30/1974
Rhode Island	Ell Pond	5/30/1974
South Carolina	Congaree River Swamp	5/30/1974
Tennessee	May Prairie	5/30/1974
Tennessee	Piney Falls	5/30/1974

Okefenokee Swamp, located in Georgia, was designated an NNL on December 2, 1974. Pictured is a photograph from the original evaluation.

NPS photo

Sites Designated December 2, 1974

State	Landmark	Secretary Approval Date
Arizona	Canelo Hills Cienega	12/2/1974
Arkansas	Big Lake Natural Area	12/2/1974
Arkansas	White River Sugarberry Natural Area	12/2/1974
Florida	Devil's Millhopper	12/2/1974
Florida	Emeralda Marsh	12/2/1974
Florida	Osceola Research Natural Area	12/2/1974
Florida	Paynes Prairie	12/2/1974
Florida	San Felasco Hammock	12/2/1974
Georgia	Okefenokee Swamp	12/2/1974
Indiana	Cabin Creek Raised Bog	12/2/1974
Indiana	Calvert and Porter Woods Nature Preserve	12/2/1974
Indiana	Davis-Purdue Agricultural Center Forest	12/2/1974
Indiana	Dunes Nature Preserve	12/2/1974
Indiana	Officer's Woods	12/2/1974
Indiana	Rocky Hollow-Falls Canyon Nature Preserve	12/2/1974
Maryland	Belt Woods	12/2/1974
Missouri	Cupola Pond	12/2/1974
Ohio	Arthur B. Williams Memorial Woods	12/2/1974
Ohio	Blacklick Woods	12/2/1974
Ohio	Crall Woods	12/2/1974
Ohio	Fort Hill State Memorial	12/2/1974
Ohio	Goll Woods	12/2/1974
Ohio	Hazelwood Botanical Preserve	12/2/1974
Oklahoma	Devil's Canyon	12/2/1974
Oklahoma	McCurtain County Wilderness Area	12/2/1974
Pennsylvania	Reynolds Spring and Algerine Swamp Bogs	12/2/1974
Pennsylvania	Tannersville Cranberry Bog	12/2/1974
Tennessee	Arnold Engineering Development Center Natural Areas	12/2/1974
Virginia	Caledon Natural Area	12/2/1974
Virginia	Charles C. Steirly Natural Area	12/2/1974
Virginia	Rich Hole	12/2/1974
West Virginia	Big Run Bog	12/2/1974
West Virginia	Blister Run Swamp	12/2/1974
West Virginia	Canaan Valley	12/2/1974
West Virginia	Cranberry Glades Botanical Area	12/2/1974
West Virginia	Fisher Spring Run Bog	12/2/1974
West Virginia	Gaudineer Scenic Area	12/2/1974
West Virginia	Shavers Mountain Spruce-Hemlock Stand	12/2/1974

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