From List of National Natural Landmarks, these are the National Natural Landmarks in Oklahoma. There are 3 in total.
|
Name |
Image |
Date |
Location |
County |
Ownership |
Description |
| 1 |
Devil's Canyon |
|
December 1974 |
35°21′48″N 98°20′30″W / 35.363333°N 98.341667°W / 35.363333; -98.341667 (Devil's Canyon) |
Canadian |
private |
Known for several different mesic plants in a diverse environment of oak woodland/tall prairie grass and eastern deciduous forest |
| 2 |
McCurtain County Wilderness Area |
|
December 1974 |
Broken Bow 34°16′55″N 94°41′48″W / 34.281971°N 94.696655°W / 34.281971; -94.696655 (McCurtain County Wilderness Area) |
McCurtain |
state |
A 14,087 acres (57.01 km2) wilderness nature preserve since 1918. It is an excellent example of a xeric upland oak-pine forest |
| 3 |
Salt Plains National Wildlife Refuge |
|
June 1983 |
Jet 36°45′01″N 98°13′27″W / 36.750314°N 98.224259°W / 36.750314; -98.224259 (Salt Plains National Wildlife Refuge) |
Alfalfa |
federal |
A 32,000-acre (130 km2) National Wildlife Refuge, it is a critical habitat for 75% of the endangered whooping crane population. |
