Hidden Valley Wildlife Management Area is a 6,400-acre (26 km2) Wildlife Management Area in Washington County, Virginia, along its border with Russell County. The area is typified by mountainous mature hardwood forests that have regenerated on land logged in the early twentieth century; a number of small openings which are also maintained as habitat for local wildlife. Its elevation ranges from 2,000 to 4,000 feet above sea level. At the head of the valley is the 60-acre (24 ha) Hidden Valley Lake, which serves as the source of Brumley Creek.