White Oak Ridge-Terrapin Mountain is a rugged wildland in Virginia’s Blue Ridge within the George Washington and Jefferson National Forests, valued for its remoteness, older forests, and rich mountain habitat. Part of the Glenwood Cluster, it includes steep ridges, large scree slopes, and peaks such as Terrapin Mountain and Onion Mountain, with major elevation change across the landscape. Trails enter the backcountry, while overgrown logging roads and railroad grades reflect heavy timbering in the early twentieth century. Its ecological importance is exceptional, with special biological areas, possible old-growth forest, black bear, salamanders, trout, and high-quality streams. It has also been part of debates over wilderness protection and road building.