Brush Mountain Wilderness, Protected natural area in Virginia, United States.

Brush Mountain Wilderness is a protected natural area in Virginia's Appalachian region featuring steep terrain, thick forest cover, and exposed rock outcrops. The landscape spans rugged mountainous ground without infrastructure or developed trails.

Congress designated the Brush Mountain Wilderness in 1984 under the Eastern Wilderness Act, and the Forest Service manages it. The protected area lies beside Brush Mountain East Wilderness and forms part of the Craig Creek Cluster. Hollow names such as Betsy Boating Hollow and Leyman Hollow recall families who lived in the area at the end of the nineteenth century.

Hollow names record local use and settlement: Hazelnut, Sugar Bottom and Sugar House Hollows refer to resources gathered there, while Betsy Boating, Jones and Leyman Hollows likely carry the names of families living in the area at the end of the nineteenth century.

Visitors should bring navigation tools, adequate water, and emergency supplies since the area has no marked routes. Anyone hiking here needs experience finding their own way and should prepare thoroughly before entering.

Brush Mountain's crest is capped by hard Devonian sandstone formed 360 to 408 million years ago, which juts out to the north at the top of the slope. Beneath it lie brittle layers of older Devonian shale that erode easily, while Silurian sandstone in the Craig Creek valley extends northwest to form Sinking Creek Mountain.