Natural Bridge State Natural Area & Trailhead - Head of the Crow State Park

The Mr. and Mrs. Harry Lee Carter Natural Area is a 931-acre natural area located in Franklin County that is part of the South Cumberland Recreation Area. Named after the couple who donated the land to the State, this natural area protects part of a large solution valley associated with the karst erosional processes characteristic of the Cumberland Plateau escarpment.

Sequatchie Cave is a 133-acre natural area located in Marion County. It is a biologically significant area located where Owen Spring Branch flows from the mouth of the cave at Sequatchie Cave Park. The cave and its cold spring water support three federally and state-listed animal species, three other species of state concern, and many other aquatic and cave species.

May Prairie is a 492-acre natural area in Coffee County near Manchester. The open grassland is primarily comprised of a little bluestem community and a tall grass prairie community.