| Name
|
Image
|
Date
|
Location
|
County
|
Ownership
|
Description
|
| Big Oak Tree State Park
|
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|
May 1986
|
East Prairie 36°39′18″N 89°19′42″W / 36.655°N 89.32833°W / 36.655; -89.32833 (Big Oak Tree State Park)
|
Mississippi
|
state
|
A rare untouched wet-mesic bottomland hardwood forest in the Mississippi Alluvial Plain, it is the home of several state and national champion trees
|
| Carroll Cave
|
|
1977
|
|
Camden
|
private
|
Contains a dendritic system of subsurface karst streams and tributaries.
|
| Cupola Pond
|
|
1974
|
|
Ripley
|
federal
|
One of the most ancient sinkhole ponds in the Ozark plateaus. Located in Mark Twain National Forest.
|
| Golden Prairie
|
|
1975
|
Golden City 37°21′45″N 94°09′01″W / 37.36261°N 94.15019°W / 37.36261; -94.15019 (Golden Prairie)
|
Barton
|
private
|
An unplowed remnant of the tall grass prairie ecosystem.
|
| Grand Gulf State Park
|
|
June 1971
|
Thayer 36°31′27″N 91°32′38″W / 36.52427°N 91.54389°W / 36.52427; -91.54389 (Grand Gulf State Park)
|
Oregon
|
state
|
An excellent example of karst topography, this canyon is a collapsed dolomite cave with a 200 feet (61 m) natural bridge. Water in this canyon emerges 9 miles (14 km) away in Mammoth Spring, Arkansas.
|
| Greer Spring
|
|
1980
|
36°47′12″N 91°20′51″W / 36.786667°N 91.3475°W / 36.786667; -91.3475 (Greer Spring)
|
Oregon
|
private
|
Spring in the Ozarks that discharges into a high quality, cascading stream.
|
| Maple Woods Natural Area
|
|
1980
|
|
Clay
|
state
|
Contains a nearly virgin sugar maple and mockernut hickory forest.
|
| Maramec Spring
|
|
October 1971
|
St. James 37°57′19″N 91°32′11″W / 37.95526°N 91.53632°W / 37.95526; -91.53632 (Maramec Spring)
|
Phelps
|
private
|
A natural spring, the fifth largest in the state. It has a notable trout park and a historic iron works in a privately owned park.
|
| Mark Twain and Cameron Caves
|
|
1972
|
39°41′19″N 91°19′54″W / 39.68864°N 91.33153°W / 39.68864; -91.33153 (Mark Twain Cave)
|
Marion
|
private
|
Exceptionally good examples of the maze type of cavern development.
|
| Marvel Cave
|
|
1972
|
36°40′03″N 93°20′23″W / 36.6675°N 93.3397°W / 36.6675; -93.3397 (Marvel Cave)
|
Stone
|
private
|
Includes one of the greatest dripstone units of all the Ozark caves.
|
| Onondaga Cave State Park
|
|
1980
|
38°03′39″N 91°13′38″W / 38.060833°N 91.227222°W / 38.060833; -91.227222 (Onondaga Cave State Park)
|
Crawford
|
state
|
Contains an unusually large and varied number of speleothems.
|
| Pickle Springs
|
|
1975
|
|
Ste. Genevieve
|
state
|
Contains one of the finest Pleistocene relict habitats in Missouri.
|
| Taberville Prairie Conservation Area
|
|
1975
|
|
St. Clair
|
state
|
One of the largest remaining virgin tall grass prairies.
|
| Tucker Prairie
|
|
1975
|
|
Callaway
|
private
|
A virgin tall grass prairie occurring within the transition zone between the oak-hickory forest and typical tall grass prairie.
|
| Tumbling Creek Cave
|
|
1980
|
|
Taney
|
private
|
Contains the most diverse fauna known for any cave west of the Mississippi River.
|
| Wegener Woods
|
|
1975
|
|
Warren
|
private
|
An essentially virgin oak-hickory-dominated forest in a condition of gradual change to a sugar maple-dominated forest.
|
