Bull Trout Wilderness . (S) Breadwinner Wilderness Certain Federal land within the Boise National Forest comprising approximately 20,000 acres, identified as Breadwinner Wilderness on the Map, which shall be known as the Breadwinner Wilderness . (T) Elk Creek Wilderness Certain Federal land within the Boise National Forest comprising approximately 15,000 acres, identified as Elk Creek Wilderness on the Map, which shall be known as the Elk Creek Wilderness . (U) Steel Mountain Wilderness Certain Federal land within the Boise National Forest comprising approximately 23,000 acres, identified as Steel Mountain Wilderness on the Map, which shall be known as the Steel Mountain Wilderness . (V) Rainbow Wilderness Certain Federal land within the Boise National Forest comprising approximately 31,000 acres, identified as Rainbow Wilderness on the Map, which shall be known as the Rainbow Wilderness . (W) Grand Mountain Wilderness Certain Federal land within the Boise National Forest comprising approximately 14,000 acres, identified as Grand Mountain Wilderness on the Map, which shall be known as the Grand Mountain Wilderness . (X) Sheep Creek Wilderness Certain Federal land within the Boise National Forest comprising approximately 70,000 acres, identified as Sheep Creek Wilderness on the Map, which shall be known as the Sheep Creek Wilderness . (Y) Snowbank Wilderness Certain Federal land within the Boise National Forest comprising approximately 34,000 acres, identified as Snowbank Wilderness on the Map, which shall be known as the Snowbank Wilderness . (Z) House Mountain Wilderness Certain Federal land within the Boise National Forest comprising approximately 26,000 acres, identified as House Mountain Wilderness on the Map, which shall be known as the House Mountain Wilderness . (AA) Danskin Wilderness Certain Federal land within the Boise National Forest comprising approximately 30,000 acres, identified as Danskin Wilderness on the Map, which shall be known as the Danskin Wilderness . (BB) Cow Creek Wilderness Certain