List of National Natural Landmarks in Oklahoma facts for kids
|1||Devil's Canyon||December 1974||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||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||Alfalfa||federal||A 32,000-acre (130 km2) National Wildlife Refuge, it is a critical habitat for 75% of the endangered whooping crane population.|
List of National Natural Landmarks in Oklahoma Facts for Kids. Kiddle Encyclopedia.