Question:  Castle Rock Mountain is in a wilderness created from existing National Forest lands in 1978 and is composed of how many acre?

Context articles: Wind River Peak
Castle Rock Mountain
Palouse National Forest
Bridger National Forest
Cibola National Forest
New Mexico Wilderness Act of 1980
Absaroka-Beartooth Wilderness
Coconino National Forest
Sundance Glacier
Beartown Wilderness

Wind River Peak (13197 ft ) is the highest point in the southern end of the Wind River Range that is located in the U.S. state of Wyoming.
 The peak straddles the Continental Divide and is surrounded by National Forest lands.
 The west slopes are in the Bridger Wilderness of Bridger-Teton National Forest, while the east side is in the Popo Agie Wilderness of Shoshone National Forest.
 In a cirque on the northeast slopes of the peak lies Wind River Glacier.
Castle Rock Mountain (12406 ft ) is in the Beartooth Mountains in the U.S. state of Montana.
 The peak is one of the tallest in the Beatooth Mountains, the tenth-tallest in Montana and is in the Absaroka-Beartooth Wilderness, on the border of Custer and Gallatin national forests.
 The nearest taller mountain to Castle Rock Mountain is Castle Rock Spire, 0.65 mi east.
 Castle Rock Mountain is flanked by the Sundance Glacier to the north and the Castle Rock Glacier to the south.
The Palouse Forest Reserve and after March 4, 1907, the Palouse National Forest was established by Presidential Proclamation (34 U.S. Statutes at Large 3293) on March 2, 1907 and was one of President Theodore Roosevelt's Midnight forests, created before the federal law banning new forest reserves in six western states, including Idaho, became effective.
 The conventional wisdom has the name ‘palouse’ being derived from the French term for the large treeless plain region in eastern Washington stretching into Idaho: the Palouse, a word meaning grassy spot or place.
 However, Boone says that the name could originate from the name of a major village of Palouse Indians, Palus, located at the confluence of the Palouse and Snake Rivers.
 'Palus' is the Sachapin Indian word for “something sticking down in the water,” in this case the something was a large rock, thought to be a beaver’s heart, and which had an important religious significance for the Palouse Indians.
 The Palouse National Forest had its administrative headquarters in the town of Wallace, Idaho for its 15-month existence and was administered by the U.S. Forest Service with 194404 acre .
 With the issuance of Executive Order 843 by President Roosevelt on June 26, 1908, with an effective date of July 1, 1908, the entire forest was absorbed by the Coeur d'Alene National Forest and the area ceased to be an independently administered national forest.
 The lands of the former Palouse National Forest were then administered as part of the Coeur d’Alene National Forest for three years before being combined with other lands to establish the St. Joe National Forest on July 1, 1911.
 The area of the former Palouse National Forest formed the western portion of the St. Joe National Forest.
 Once transferred in 1911, the area of the Palouse National Forest became the Palouse Ranger District of the St. Joe National Forest and is still considered part of the St. Joe National Forest.
 However, it has been administered by the Clearwater National Forest since the 1973 administrative merger of the Kaniksu National Forest, Coeur d’Alene, and St. Joe National Forests into the Idaho Panhandle National Forests.
Bridger National Forest was first established by the U.S. Forest Service on July 1, 1911 in Wyoming with 577580 acre from part of Bonneville National Forest.
 On May 14, 1923 Bridger was transferred Wyoming National Forest, and the name was discontinued.
 On March 10, 1943 Wyoming was renamed Bridger.
 In 1973 Bridger National Forest was administratively combined with Teton National Forest, creating Bridger-Teton National Forest.
 In descending order of land area, Bridger National Forest lands are located in Sublette, Lincoln, Fremont, and Teton counties.
 There are local ranger district offices in Afton, Big Piney, Kemmerer, and Pinedale.
 Its administrative headquarters reside in Jackson, Wyoming as part of the combined Bridger-Teton National Forest.
 Its current area of 1,736,075 acres (7,025.65 km²) represents 51.02% of the combined Bridger-Teton's area of 3,402,644 acres (13,770.01 km²).
 The forest includes all of the National Wilderness Preservation System's officially designated Bridger Wilderness.
The Cibola National Forest (pronounced SEE-bo-lah) is a 1,633,783 acre (6,611.7 km2) United States National Forest in New Mexico, USA.
 The name Cibola is thought to be the original Zuni Indian name for their pueblos or tribal lands.
 The name was later interpreted by the Spanish to mean, "buffalo."
 The forest is disjointed with lands spread across central and northern New Mexico, west Texas and Oklahoma.
 The Cibola National Forest is divided into four Ranger Districts: the Sandia, Mountainair, Mt. Taylor, and Magdalena.
 The Forest includes the San Mateo, Magdalena, Datil, Bear, Gallina, Manzano, Sandia, Mt. Taylor, and Zuni Mountains of west-central New Mexico.
 The Forest also manages four National Grasslands that stretch from northeastern New Mexico eastward into the Texas Panhandle and western Oklahoma.
 The Cibola National Forest and Grassland is administered by Region 3 of the United States Forest Service from offices in Albuquerque, New Mexico.
 Elevation ranges from 5,000 ft (1,500 m) to 11,301 ft (3,445 m).
 (The preceding figures do not include any of the four National Grasslands mentioned below, which are detailed in their individual articles.)
 The descending order of Cibola National Forest acres (not counting the three Grassland areas) by county are: Socorro, Cibola, McKinley, Catron, Torrance, Bernalillo, Sandoval County, New Mexico, Lincoln, Sierra, and Valencia counties in New Mexico.
 The Cibola National Forest currently has 137,701 acres designated as Wilderness.
 In addition to these acres, it has 246,000 acres classified as Inventoried Roadless Areas pursuant to the Roadless Area Conservation Rule.
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.
Absaroka-Beartooth Wilderness was created from existing National Forest lands in 1978 and is located in Montana and Wyoming, United States.
 The wilderness is partly in Gallatin, Custer and Shoshone National Forests and is composed of 944,000 acre .
 The wilderness encompasses two distinct mountain ranges, namely the Beartooth and Absaroka ranges.
 These ranges are completely distinct geologically speaking with the Absarokas composed primarily of volcanic (or extrusive) and metamorphic rock, while the Beartooths are made up almost entirely of granitic rocks.
 The Absarokas are noted for their dark and craggy appearance, lush and heavily forested valleys and abundant wildlife.
 The highest peak in the range, located in Wyoming, is Francs Peak at 13,153 ft .
 The Beartooths are more alpine with huge treeless plateaus and the highest peak in the state of Montana (Granite Peak 12,799 ft ).
 The wilderness contains 30 peaks over 12,000 ft .
 The wilderness is an integral part of the 20 e6acre Greater Yellowstone Ecosystem and borders Yellowstone National Park.
The Coconino National Forest is a 1.856-million acre (751,000 ha) United States National Forest located in northern Arizona in the vicinity of Flagstaff.
 Originally established in 1898 as the "San Francisco Mountains National Forest Reserve", the area was designated a U.S. National Forest in 1908 when the San Francisco Mountains National Forest Reserve was merged with lands from other surrounding forest reserves to create the Coconino National Forest.
 Today, the Coconino National Forest contains diverse landscapes, including deserts, ponderosa pine forests, flatlands, mesas, alpine tundra, and ancient volcanic peaks.
 The forest surrounds the towns of Sedona and Flagstaff and borders four other national forests; the Kaibab National Forest to the west and northwest, the Prescott National Forest to the southwest, the Tonto National Forest to the south, and the Apache-Sitgreaves National Forest to the southeast.
 The forest contains all or parts of ten designated wilderness areas, including the Kachina Peaks Wilderness, which includes the summit of the San Francisco Peaks.
 The headquarters are in Flagstaff.
 There are local ranger district offices in Flagstaff, Happy Jack, and Sedona.
Sundance Glacier is in the U.S. state of Montana.
 The glacier is situated in the Beartooth Mountains at an elevation of 10600 ft above sea level and is immediately northeast of Castle Rock Mountain.
 The glacier covers approximately 70 acres and is located in a deep cirque below Castle Rock Mountain.
Beartown Wilderness is a U.S. wilderness area in the Eastern Divide Ranger District of the George Washington and Jefferson National Forests.
 It is a very rural Wilderness, consisting of an area of 5,613 acres with elevations ranging from 2400 to .
 It was created from existing National Forest lands in 1984 by the Virginia Wilderness Act of 1984.