Unit 42
West Bighorn
High alpine basin country anchored by Cloud Peak, with elevation spanning desert sage to subalpine terrain across the northern Bighorn range.
Hunter's Brief
Unit 42 stretches across the northern Bighorns from the Montana line south to the Powder River Pass, spanning low sagebrush foothills to high alpine country. Over 1,000 miles of roads thread through the unit—some major highways like US-14, US-14A, and US-16 providing spine access, with extensive USFS roads reaching deep into basin country. Water is scattered but reliable in higher elevations; lower drainages can be marginal. This is big, complex terrain that requires navigation skills and time to work effectively. Moose habitat concentrates in high basins with willows and water.
- Compact: under 200 sq mi
- Moderate: 200 - 800 sq mi
- Vast: over 800 sq mi
- Few: under 25%
- Some: 25 - 60%
- Most: over 60%
- Limited: under 0.7 mi/mi² (backcountry)
- Fair: 0.7 - 1.5 mi/mi²
- Connected: over 1.5 mi/mi² (well-roaded)
- Flat: under 20% mountains
- Rolling: 20 - 55%
- Steep: over 55%
- Sparse: under 20%
- Moderate: 20 - 50%
- Dense: over 50%
- Limited: under 0.3% area
- Moderate: 0.3 - 2% area
- Abundant: over 2% area
Terrain Deep Dive
Landmarks & Navigation
Cloud Peak is the dominant visual anchor and navigation reference, visible from much of the unit. Shell Falls and Porcupine Falls mark major creeks. Key basins—Cookstove, Petes Hole, Red Basin, Canyon Creek Sinks, Five Springs Basin—are primary hunting areas and water sources.
Passes like Granite Pass, Elk Pass, Snowshoe Pass, and Geneva Pass offer ridge crossings and navigation waypoints. Emerald Lake, Robin Lake, and Shell Lake provide landmark references. The Arch and distinctive rock formations like Chimney Rock and Steamship Rock aid orientation.
Major ridge systems including Blue Ridge and Canyon Ridge delineate drainage patterns. These features help hunters triangulate position and plan routes in terrain that lacks cell coverage.
Elevation & Habitat
Terrain rises dramatically from foothills near 3,600 feet to alpine zones above 13,000 feet, with the median around 5,800 feet indicating substantial low-to-mid elevation presence. Lower valleys and basins support sagebrush grassland and scattered juniper; mid-elevations transition to ponderosa and Douglas fir; upper slopes push into subalpine spruce-fir interspersed with high basins and meadows. The Bighorn range itself forms a distinct spine with Cloud Peak dominating at 13,179 feet.
Moose habitat clusters in higher willow-rich basins—Cookstove Basin, Petes Hole, Red Basin, and others marked on the landscape. The terrain is rolling to steep depending on location, with significant portions of open, high country providing glassing opportunities above timberline.
Access & Pressure
Over 1,000 miles of roads provide substantial access, but density varies dramatically. Highway 14, US-14A, and Highway 16 draw vehicle traffic and day-hunters. USFS roads penetrate major drainages but many trailheads require parking and foot access.
Pressure concentrates on accessible creeks and ridges near road-ends; basin interiors see less traffic despite good water and moose habitat. Early season brings pressure from summer visitors; late season narrows hunter numbers. Elk Park, Long Park, and other named flats indicate established camping and access points.
The unit's complexity (9.2/10) means much country remains unworked by typical hunters who don't navigate ridge systems and high passes effectively.
Boundaries & Context
Unit 42 encompasses the northern Bighorn Mountain complex from the Wyoming-Montana border south to the Powder River Pass. The western boundary follows the Bighorn River corridor; the eastern boundary traces the Bighorn Mountain divide down to Highway 16. The unit is anchored by Highway 14, US-14A, and Highway 16, which provide primary access routes. Shell, Hyattville, and scattered ranching communities sit adjacent.
This vast territory combines high mountain backcountry with accessible basin areas. Approximately 1,017 miles of roads—mostly USFS and county routes—provide penetration, though much terrain requires foot access. The unit's scale demands strategic planning; simply driving in doesn't get you to elk or moose country efficiently.
Water & Drainages
Water becomes critical in lower elevations where reliability drops. The Nowood River and Bighorn River form western and northern boundaries, accessible but not central to most hunting. Major creeks include Bear Creek, Willow Creek, North Fork Trout Creek, and Elk Springs Creek—reliable mid-to-upper elevation water.
High basins hold lakes (Emerald, Robin, Horseshoe, Round, Paint Rock) and springs scattered throughout. Lower drainages can be dry or seasonal. Moose follow willows and water; concentrations align with perennial sources in high basins where springs feed meadows.
Dry Creek, despite its name, may hold water seasonally. Plan water strategy carefully—upper elevation hunting depends on basin seeps and springs; lower work requires understanding seasonal drainage timing.
Hunting Strategy
Moose dominate species availability in Unit 42. Habitat concentrates in high elevation basins with willow-lined creeks and meadows—Cookstove Basin, Petes Hole, Red Basin, Five Springs Basin, and Devils Kitchen offer prime zones. Early season hunting works subalpine meadows where moose move into exposed basins; rut hunting (late September) keys on creek bottoms with thermal cover and willows. High basins like those near Emerald Lake and Robin Lake provide reliable water and forage.
Access to moose country requires elevation gain; drive to road-ends, then hike into basin systems. The northern Bighorn range experiences snow by October at elevation, restricting late-season hunting to lower drainage work. Navigation skills and willingness to pack in multi-day trips separates successful hunters from road-bound pressure.