Oglala National Grassland
The Oglala National Grasslands are in the northwestern corner of Nebraska, north of Crawford. “Find your way to the Hudson-Meng Bone Bed site where you can take a tour and learn about the history of this area, walk through the unique features of the Toadstool Geologic Park, or just spend some quiet time in the wide open spaces of the 94,000 acres of mixed grass prairies. ”
Described in Britannica. The Grassland is in both South Dakota and Nebraska. The headquarters is in Chadron, NE but the visitor center is in Wall, South Dakota. Two trails are mentioned but with no indication of difficulty.
Here is the Grasslands’ website. For questions about trails in the Oglala National Grassland or Nebraska National Forest you could call Mike Watts at 308-432-0390 or the Chadron Office at 308-432-0300.
? The Toadstool Geologic Area in the grassland has a one mile interpretive loop. However, according to NebraskaTravels.com, it might be too difficult to include on this site. Mike Watts of the Nebraska National Forests and Grasslands says that the first 1/3 mile of the trail used to be accessible, but it has suffered a lot of erosion.