Bureau of Land Management comprising approximately 12,000 acres, identified as Henneberry Ridge Wilderness on the Map, which shall be known as the Henneberry Ridge Wilderness . (K) Black tail mountains wilderness Certain Federal land administered by the Dillon Field Office of the Bureau of Land Management comprising approximately 15,000 acres, identified as Black Tail Mountains Wilderness on the Map, which shall be known as the Black Tail Mountains Wilderness . (L) Saginaw creek wilderness Certain Federal land within the Beaverhead-Deerlodge National Forest comprising approximately 9,000 acres, identified as Saginaw Creek Wilderness on the Map, which shall be known as the Saginaw Creek Wilderness . (M) Tash peak wilderness Certain Federal land within the Beaverhead-Deerlodge National Forest comprising approximately 53,000 acres, identified as Tash Peak Wilderness on the Map, which shall be known as the Tash Peak Wilderness . (N) Beaver lakes wilderness Certain Federal land within the Beaverhead-Deerlodge National Forest comprising approximately 7,000 acres, identified as Beaver Lakes Wilderness on the Map, which shall be known as the Beaver Lakes Wilderness . (O) Agency creek wilderness Certain Federal land within the Salmon-Challis National Forest comprising approximately 6,000 acres, identified as Agency Creek Wilderness on the Map, which shall be known as the Agency Creek Wilderness . (P) Freezeout wilderness Certain Federal land within the Caribou-Targhee and Beaverhead-Deerlodge National Forests comprising approximately 37,000 acres, identified as Freezeout Wilderness on the Map, which shall be known as the Freezeout Wilderness . (Q) Two top wilderness Certain Federal land within the Caribou-Targhee National Forest comprising approximately 7,000 acres, identified as Two Top Wilderness on the Map, which shall be known as the Two Top Wilderness . (R) Centennials wilderness Certain Federal land within the Caribou-Targhee and Beaverhead-Deerlodge National Forests and land administered by the Dillon Field Office