Forest comprising approximately 33,000 acres, identified as Mount High Wilderness on the Map, which shall be known as the Mount High Wilderness . (xii) Bluff mountain wilderness Certain Federal land within the Lewis and Clark National Forest comprising approximately 37,000 acres, identified as Bluff Mountain Wilderness on the Map, which shall be known as the Bluff Mountain Wilderness . (xiii) North fork smith wilderness Certain Federal land within the Lewis and Clark National Forest comprising approximately 9,000 acres, identified as North Fork Smith Wilderness on the Map, which shall be known as the North Fork Smith Wilderness . (xiv) Big snowies wilderness Certain Federal land within the Lewis and Clark National Forest and land administered by the Lewistown Field Office of the Bureau of Land Management comprising approximately 105,000 acres, identified as Big Snowies Wilderness on the map entitled Islands in the Sky Map 3 and dated April 28, 2016, which shall be known as the Big Snowies Wilderness . (xv) Highwoods wilderness Certain Federal land within the Lewis and Clark National Forest comprising approximately 25,000 acres, identified as Highwoods Wilderness on the Map, which shall be known as the Highwoods Wilderness . (xvi) Highwood baldy wilderness Certain Federal land within the Lewis and Clark National Forest comprising approximately 16,000 acres, identified as Highwood Baldy Wilderness on the Map, which shall be known as the Highwood Baldy Wilderness . (xvii) Calf creek wilderness Certain Federal land within the Lewis and Clark National Forest comprising approximately 10,000 acres, identified as Calf Creek Wilderness on the Map, which shall be known as the Calf Creek Wilderness . (xviii) Eagle creek wilderness Certain Federal land within the Lewis and Clark National Forest comprising approximately 6,000 acres, identified as Eagle Creek Wilderness on the Map, which shall be known as the Eagle Creek Wilderness . (xix) Castle mountains wilderness Certain Federal land within the Lewis and Clark National