The Sinking Creek Valley Cluster is a region in the Jefferson National Forest recognized by The Wilderness Society for its unique recreational and scenic values as well as the importance of its watershed protection for Johns Creek and Craig Creek. Sinking Creek Valley is one of the most scenic valleys in Virginia.

The Kimberling Creek Cluster is a region in the Jefferson National Forest recognized by The Wilderness Society for its diversity of habitats extending along parts of Brushy and Hogback Mountains. Kimberling Creek, with headwaters in the cluster, flows into Big Walker Creek, a tributary of the New River.