Stone Mountain Wilderness is a U.S. wilderness area in the Clinch Ranger District of the George Washington and Jefferson National Forests.
 It is a small tract of land in western Virginia, consisting of an area of 3,273 acres next to the banks of the Powell River.
 It was designated as wilderness area in 2009 by Omnibus Public Land Management Act of 2009.
The George Washington and Jefferson National Forests are U.S. National Forests that combine to form one of the largest areas of public land in the Eastern United States.
 They cover 1.8 e6acre of land in the Appalachian Mountains of Virginia, West Virginia, and Kentucky.
 Approximately 1 e6acre of the forest are remote and undeveloped and 139,461 acre have been designated as wilderness areas, which eliminates future development.
Saint Mary's Wilderness is a U.S. Wilderness Area in the George Washington and Jefferson National Forests.
 The wilderness area is located next to the Blue Ridge Parkway near the Parkway's northern terminus and consists of 9826 acre .
 Saint Mary's Wilderness is the largest Virginia Wilderness on national forest land.
 Saint Mary's Wilderness ranges in elevation from about 1780 ft to 3640 ft .
 The area has about 27 mi of hiking trails within or near its boundaries.
New Mexico Wilderness Act of 1980, Public Law 96-550, is a U.S. federal law that authorized the establishment of a number of designated Wilderness Areas on National Forest land in New Mexico.
 The law also added additional lands to four existing Wilderness Areas in New Mexico, and named several Forest areas for study as potential Wilderness Areas.
 The law also created two new National Park Service units, Chaco Culture National Historical Park and Salinas National Monument, from existing NPS lands.
 By means of this law approximately 400,000 acres of forest land were designated as Wilderness Areas, as described by the Wilderness Act of 1964, and approximately 75,000 additional acres were designated as Wilderness Study Areas for possible future inclusion in the Wilderness program.
Public Law 94-567 is a 1976 Federal law that established a number of new designated Wilderness Areas on National Park Service lands.
 Signed into law by President Gerald Ford on October 20, 1976, the new statute added almost 900,000 acres of wilderness into the National Wilderness Preservation System.
 While the majority of designated Wilderness Areas at the time were located in National Forests, this was one of the first laws to formally establish wilderness areas in National Parks and Monuments.
Garden Mountain Wilderness is a U.S. wilderness area in the Eastern Divide Ranger District of the George Washington and Jefferson National Forests.
 It is a small wilderness area in western Virginia, consisting of an area of 3,331 acres and bordering the Beartown and Hunting Camp Creek Wilderness.
 It was designated as wilderness area in 2009 by Omnibus Public Land Management Act of 2009.
 The wilderness area also borders a portion of the Appalachian Trail.
Endangered American Wilderness Act (Public Law 95-237) is a Federal law, enacted in 1978, that established ten new designated Wilderness Areas in the National Forests of several Western states.
 Sponsored by Arizona Democrat Morris Udall, the law added approximately 400,000 thousand acres of wilderness in California, Utah, New Mexico, and Wyoming, to the National Wilderness Preservation System.
 Other sections of the law established three new Wilderness Areas in Oregon and added additional acreage to two existing areas, and ordered the creation of a committee to develop a management plan for 330,000 acres of public land along the Salmon River in Idaho known as the Gospel-Hump area.
Ramsey’s Draft Wilderness is a designated wilderness area in the North River Ranger District of the George Washington and Jefferson National Forests of Virginia in the United States.
 The wilderness area was established in 1984 and comprises 6518 acre .
 It is administered by the US Forest Service.
The National Wilderness Preservation System (NWPS) of the United States protects federally managed wilderness areas designated for preservation in their natural condition.
 Activity on formally designated wilderness areas is coordinated by the National Wilderness Preservation System.
 Wilderness areas are managed by four federal land management agencies: the National Park Service, the U.S. Forest Service, the U.S. Fish and Wildlife Service, and the Bureau of Land Management.
 The term "wilderness" is defined as "an area where the earth and community of life are untrammeled by man, where man himself is a visitor who does not remain" and "an area of undeveloped Federal land retaining its primeval character and influence, without permanent improvements or human habitation, which is protected and managed so as to preserve its natural conditions."
 As of 2015, there are 765 designated wilderness areas, totaling 109,129,657 acre , or about 4.5% of the area of the United States.
Brush Mountain East Wilderness is a U.S. wilderness area in the Eastern Divide Ranger District of the George Washington and Jefferson National Forests.
 It was designated as wilderness area in 2009 by Omnibus Public Land Management Act of 2009.

Question: How much area of George Washington and Jefferson National Forests is designated  as wilderness areas?
Answer: 139,461 acre