Unit 15

Key landmarks anchor navigation across this complex terrain. Three Buttes and Devils Monument provide distinctive visual references from lower elevations. Robins Ridge, Box Elder Ridge, and Lookout Ridge offer valuable glassing platforms.

The Wall, Red Wall formations, and Cottonwood Rim mark terrain breaks visible from distance. Named draws—Lost Canyon, Devoe Canyon, Wolf Den Draw—provide navigation corridors through sagebrush. Hole-in-the-Wall Lake and several spring complexes mark reliable water locations.

Powder River Pass and Dull Knife Pass offer strategic crossing points between major drainages. These features aid route-finding in terrain that rewards careful map study.

Terrain rises dramatically from arid basins near 4,600 feet to mountain ridges exceeding 10,000 feet. Lower elevations feature open sagebrush flats and grasslands typical of Wyoming's high plains transition zone. Moving upslope, scattered juniper and ponderosa begin appearing, gradually increasing in density toward the higher ridges.

Mid-elevation slopes offer patchwork terrain—sparse timber interspersed with open slopes, rock outcrops, and draws carved by seasonal water. The mountain divide supports denser conifer cover and steeper terrain. This elevation span creates distinct hunting zones: open lower country for glassing, broken mid-elevation ridges offering cover and visibility, and steeper high country requiring technical navigation.

Despite over 1,000 miles of road infrastructure, access remains constrained by terrain fragmentation and limited entry points. County roads and Forest Service roads provide access corridors, but much terrain lies between roads in roadless basins and ridges. This geometry naturally segments the unit—most pressure concentrates near road-accessible rim country and established camp spots.

Vast sagebrush middle ground sees lighter use simply because it offers neither easy driving nor dramatic terrain features. Vehicle access is critical here; horses provide significant advantage for reaching core areas. The limited water situation reduces hunter distribution further, concentrating pressure at known springs and lakes.

Complexity (9.3/10) creates inherent pressure relief for those willing to navigate difficult country and water problems.

Unit 15 forms a large diamond shape anchored by Casper to the south and the Big Horn Mountain Divide to the north. Interstate 25 marks the eastern boundary near Middle Fork Crazy Woman Creek, while U.S. Highway 20-26 defines the southern edge through Casper and westward to Waltman. The unit extends northward through increasingly rugged country, bounded by Forest Service roads climbing toward the Big Horn high country.

Its western edge follows Highway 16 and Forest Service access into the mountains. This positioning places hunters within striking distance of both lowland and mid-elevation terrain across approximately 1,000 square miles.

Water availability severely limits hunting strategy in Unit 15. Permanent sources include scattered springs—Cottonwood Spring, Carr Spring, Hackett Spring, Antelope Springs—and reservoirs concentrated in lower elevations. North Fork and South Fork Cottonwood Creeks, Rock Creek, and Johnson Creek provide seasonal flow but reliability varies dramatically by month and recent precipitation. Several lakes exist (Greasewood Lake, Hole-in-the-Wall Lake, McLaughlin Lake), primarily at mid-to-upper elevations.

Large swaths of sagebrush plateau offer no reliable water; hunters must plan water carries or accept being tethered to known sources. Summer hunting requires intimate knowledge of spring locations; fall and early season demand flexibility as surface water disappears.

Mountain lion hunting in Unit 15 requires understanding both the open lower country and broken ridge systems. Lions use drainage corridors and draws connecting sagebrush basins to steeper, timbered ridges where escape terrain begins. Early season access to mid-elevation ridges (Robins Ridge, Box Elder Ridge area) offers opportunities during summer distribution.

Fall and winter compress lions into timbered high country and deeper drainages as snowpack builds. Hound hunting is most effective here—the fragmented terrain and scattered cover make stalking difficult but allow dogs to work draws and timber systematically. Glassing lower basins at dawn and dusk locates lions moving between thermal cover and feeding areas.

Water sources become critical focal points late season. Success requires persistence in difficult country and willingness to spend time understanding lion movement patterns across elevation zones.