acres, identified as Whitetail-Haystack Wilderness on the Map, which shall be known as the Whitetail-Haystack Wilderness . (xxxiii) O’neil creek wilderness Certain Federal land within the Beaverhead-Deerlodge National Forest comprising approximately 7,000 acres, identified as O’Neil Creek Wilderness on the Map, which shall be known as the O’Neil Creek Wilderness . (xxxiv) Bangtail wilderness Certain Federal land within the Custer Gallatin National Forest comprising approximately 51,000 acres, identified as Bangtail Wilderness on the Map, which shall be known as the Bangtail Wilderness . (13) Mt. Leidy Highlands/Wind River Range Corridor Certain Federal land in Mt. Leidy Highlands/Wind River Range Corridor within the Shoshone National Forest comprising approximately 7,000 acres, identified as Fish Lake Mountain Wilderness on the map entitled Greater Yellowstone and dated April 28, 2016, is designated as a component of the National Wilderness Preservation System and shall be known as the Fish Lake Mountain Wilderness . 109. Administration (a) In general Subject to valid existing rights, land designated as wilderness by this title shall be administered by the Secretary concerned in accordance with the Wilderness Act ( 16 U.S.C. 1131 et seq.), except that— (1) any reference in that Act to the effective date shall be deemed to be a reference to the date of the enactment of this Act