The area largely consists of grass-covered plains.

Plants on the site include prairie sandreed, blue grama, little bluestem and needle and thread grass, and the wildflowers lupin, spiderwort, western wallflower and sunflowers.

The Harold J. Cook Homestead (Bone Cabin Complex) was listed on the National Register of Historic Places in 1977.

[4] Agate Fossil Beds is maintained by the National Park Service.

Fossils from the Harrison Formation and Anderson Ranch Formation, which date to the Arikareean in the North American land mammal classification, about 20 to 16.3 million years ago, are among some of the best specimens of Miocene mammals.