HD 405 covers the far southeast corner of Montana around Alzada—rolling sage prairie, ponderosa-pine breaks, and badland coulees in the country where the state corners against South Dakota and Wyoming. Elevations run from about 3,000 feet on the Little Missouri River bottom up to 4,500 feet on the higher pine-covered buttes. The Little Missouri cuts through the unit and provides the cottonwood-bottom whitetail corridor; the surrounding country is sage flats, scattered ponderosa-pine breaks, sandstone outcrops, and dryland ag wherever it can be plowed. The country is closer in feel to western South Dakota and northeast Wyoming than to most of Montana—you're closer to Belle Fourche and Sundance than to Miles City. Mule deer use the breaks and the timbered ridges; whitetail concentrate in the Little Missouri bottoms; pronghorn on the open prairie; some elk move through the timbered breaks; turkeys in the pines. Custer Gallatin NF (Sioux District) holds a few timber tracts, BLM scatters through the country, and the bulk is private ranchland. Block Management is essential. US-212 east-west is the only paved road; county and BLM dirt routes handle the rest, and they gumbo when wet. Alzada is barely a place—a gas pump, the Stoneville Saloon, a few houses; Broadus is northwest 45 miles, Ekalaka northeast, Belle Fourche SD just over the border to the southeast and a more practical supply stop. Cell service is essentially gone. Most hunters who hunt 405 are either landowner-tag holders or dedicated ranch-knockers who built relationships over years. A patient hunter willing to walk the few BLM blocks can find country untouched by anyone else.