What is "greyledge"

Greyledge is a historic home and national historic district in Botetourt County, Virginia. It encompasses 13 contributing buildings, 2 contributing sites, and 2 contributing structures, as well as woods and cropland. Although less than a mile from Interstate 95, the house seated on a knob 1200 feet in altitude is not visible from the interstate highway, nor is the highway visible from the house. Purgatory Mountain is visible to the west of the house, which has views of the Blue Ridge Mountains to the south and east. Purgatory Creek drains much of the property and flows into the James River several miles south in the town of Buchanan.