National Forest comprising approximately 249,213 acres, identified as Gallatin Range on the Map, which shall be known as the Gallatin Range Wilderness . (M) Garnit Mountain Wilderness Certain Federal land within the Custer Gallatin National Forest comprising approximately 7,853 acres, identified as Garnit Mountain on the Map, which shall be known as the Garnit Mountain Wilderness . (N) Lionhead Wilderness Certain Federal land within the Custer Gallatin National Forest and the Caribou-Targhee National Forest comprising approximately 60,998 acres, identified as Lionhead on the Map, which shall be known as the Lionhead Wilderness . (O) Deep Lake Wilderness Certain Federal land within the Custer Gallatin National Forest and the Shoshone National Forest comprising approximately 140,070 acres, identified as Deep Lake on the Map, which shall be known as the Deep Lake Wilderness . (P) Monument Ridge Wilderness Certain Federal land within the Bridger-Teton National Forest comprising approximately 17,595 acres, identified as Monument Ridge on the Map, which shall be known as the Monument Ridge Wilderness . (Q) Munger Mountain Wilderness Certain Federal land within the Bridger-Teton National Forest comprising approximately 10,071 acres, identified as Munger Mountain on the Map, which shall be known as the Munger Mountain Wilderness . (R) Little Sheep Mountain Wilderness Certain Federal land within the Bridger-Teton National Forest comprising approximately 13,699 acres, identified as Little Sheep Mountain on the Map, which shall be known as the Little Sheep Mountain Wilderness . (S) Mt. Leidy Highlands Wilderness Certain Federal land within the Bridger-Teton National Forest comprising approximately 213,457 acres, identified as Mt. Leidy Highlands on the Map, which shall be known as the Mt. Leidy Highlands Wilderness . (T) Salt River Range Wilderness Certain Federal land within the Bridger-Teton National Forest comprising approximately 245,154 acres, identified as Salt River Range on the Map, which shall be known as the Salt