Unit 36A-2
High-elevation Idaho backcountry spanning the Pahsimeroi and Boulder ranges with sprawling alpine basins.
Hunter's Brief
This is genuine backcountry elk country sitting high in the Pahsimeroi and Boulder mountains. Elevations range from lower transition zones up through extensive alpine terrain, with sparse timber scattered across rolling ridges and broad basins. A network of roads and trails provides access points, but once you're in the basins—Bradshaw, Horse, Spring, Corral—you're navigating real country. Water exists but requires knowing where springs and creeks run. The complexity and elevation make this a serious hunt, best suited for hunters comfortable with the physical demands of high-country elk work.
- 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
The major basins—Bradshaw, Horse, Spring, Corral—function as both landmarks and hunting focal points; each holds water and feeds elk. Pahsimeroi and Boulder mountains define the unit's geographic frame. Key summits like Lone Pine Peak, Sheep Mountain, and Meridian Peak serve as excellent glassing vantage points and navigation aids.
Hunter Creek and Willow Creek summits mark important saddles. The creek systems—Bartlett, Gooseberry, North Fork Sage, Summit, Grasshopper—drain the basins and provide travel corridors and water sources. Big Fall Creek Lake and North Fork Lake offer reliable water in high country.
Springs like Rosebrior, Lower Bradshaw, and Scratching Post anchor water strategy.
Elevation & Habitat
The unit spans genuine elevation, rising from around 5,000 feet into high alpine terrain above 11,600 feet, with most country sitting in the 7,500-foot zone where the mountain character becomes dominant. Sparse forest dominates—expect scattered timber and open parks rather than dense stands, creating a mosaic of meadows, sagebrush, and ponderosa patches broken by rocky ridges. The open nature of the terrain is deceptive; those basins and rolling ridges offer good glassing but also mean wind and exposure are constant factors.
Higher elevations grade into alpine meadows and talus; lower zones transition toward sagebrush country. This spacing of trees across rolling terrain creates classic elk country with good sight lines.
Access & Pressure
A connected road network of roughly 1,000 miles provides access, though density metrics aren't available—the key point is there are entry points but interior access remains limited. Primary staging areas cluster around lower valleys with road access; once in the high basins, you're on foot or horseback. The vast size and connected badge suggest enough road access to spread initial pressure, but the rolling, open terrain means moving through the unit efficiently without bumping into others is possible if you avoid the obvious access corridors.
The terrain complexity (7.8/10) suggests this isn't casual drive-up hunting; it demands navigation skills and comfort in big country.
Boundaries & Context
Unit 36A-2 encompasses that portion of Custer County within a landscape defined by the Pahsimeroi and Boulder mountain ranges. The unit sprawls across high-elevation terrain with multiple named basins—Bradshaw, Horse, Spring, Corral, and others—that form the backbone of elk habitat. Named summits like Lone Pine Peak, Meridian Peak, and Sheep Mountain provide orientation landmarks.
The terrain sits in the transition between lower Idaho valleys and true alpine country, with the unit's character shaped by its high median elevation and rolling mountain topography. Road access connects several entry points, though much of the interior remains roadless.
Water & Drainages
Water exists but scattered across high country, making knowledge of spring locations critical. Reliable sources include Big Fall Creek Lake, North Fork Lake, and Herd Lake in upper elevations; lower, creeks like Bartlett, Gooseberry, and North Fork Sage flow more consistently. Numerous named springs—Rosebrior, Lower Bradshaw, Marafio, Philips, Scratching Post, Horse Basin Spring—dot the basins and ridges but vary seasonally.
Thousand Springs provides water in specific locations. The creek drainages (Summit, Grasshopper, Mud, Mosquito, Herd, Hole-in-Rock, Sheep) flow through canyons and valleys, creating natural travel routes and concentrated elk use. Early season may require spring-hunting; late season pushes elk to reliable creek drainages.
Hunting Strategy
This is an elk unit where elevation and terrain dictate everything. Elk occupy the basins and ridges, moving through the open parks and sparse timber according to season and weather. Early season finds them higher in cool parks; as weather turns, they drop into protected drainages and lower basins.
The rolling terrain with sparse cover rewards glassing from distance—pick high points overlooking basins like Bradshaw or Horse, set up binoculars, and let the country work for you. Water concentration around named springs and creeks becomes your secondary focus. Physical fitness matters; the elevation and terrain complexity demand it.
Plan around spring locations early season, creek corridors later, and expect to cover country—this isn't a spot-and-stalk unit where elk pile up. Success hinges on reading terrain, accessing lightly-hunted basins, and having water knowledge before you start.