Hunt District 121 is a large area in western Montana. The Clark Fork River flows through the center of the unit, and the Idaho state line is the western border. Hunters in this area can either backpack into remote areas or hunt established logging roads.

Mule deer numbers are steadily decreasing and finding a mature buck is very difficult although whitetail deer numbers are good along the Clark Fork River.

Terrain will vary from high subalpine fir meadows to lower alder brush fields and thick forests. This area has numerous trails, gated forest service roads, walk in areas that are closed to motorized vehicles and some logging roads that are open to motorized use. The valley has lots of agriculture fields along with pockets of heavily forested timber.

Some well-maintained roads that provide good access into the unit inlude Highway 200, Highway 56, Vermillion River and Big Beaver Creek. The majority of the unit is on National forest land. Some of the larger portions of private land are along the Clark Fork River.

Subalpine meadows and high altitude lakes can be found in higher elevations. Dense forest cover from both trees and brush can be found from mid elevation areas all the way to the valleys. Many streams can be found in this area, with large alder fields typically surrounding these water sources. Some of the tree species in the unit are Douglas fir, engelmann spruce, subalpine fir, grand fir, western larch, lodgepole pine, aspen, cottonwood, ponderosa pine and many different species of brush.

Trout Creek is a small town but can provide hunters with some lodging and gas stations. Thompson Falls is the nearest town to the southern edge of the unit and has lodging, gas stations and a groccery store. The best option for lodging on the north end of the unit is Noxon, which is small but does provide some accommodations for hunters.