List of National Natural Landmarks in Arkansas

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From List of National Natural Landmarks, these are the National Natural Landmarks in Arkansas. There are 5 in total, 4 are forests, 1 is a spring.

Name Image Date Location County Ownership Description
1 Big Lake Natural Area Big Lake Refuge (12293852915).jpg 1974 35°54′48.61″N 90°7′3.4″W / 35.9135028°N 90.117611°W / 35.9135028; -90.117611 Mississippi Federal Forest area within Big Lake National Wildlife Refuge.
2 Lake Winona Research Natural Area 1976 34°42′36.66″N 94°25′27.81″W / 34.7101833°N 94.4243917°W / 34.7101833; -94.4243917 Saline Federal Pine forest near Lake Winona; part of Ouachita National Forest.
3 Mammoth Spring Mammoth spring (47).JPG 1972 36°29′52″N 91°32′09″W / 36.4978°N 91.5359°W / 36.4978; -91.5359 (Mammoth Spring) Fulton State The largest first magnitude spring in Arkansas, it is connected underground to the Grand Gulf State Park in Missouri.
4 Roaring Branch Research Natural Area 1976 34°22′22.8″N 93°58′40.8″W / 34.373000°N 93.978000°W / 34.373000; -93.978000 Polk Federal Steep ravine with a virgin forest in Ouachita National Forest.
5 White River Sugarberry Natural Area White River Boardwalk Trail (5781633755).jpg 1974 34°21′0″N 91°6′0″W / 34.35000°N 91.10000°W / 34.35000; -91.10000 Desha Federal Virgin hardwood bottomland forest in White River National Wildlife Refuge.