Unit 51-2

Key landmarks serve as anchors in this trackless country. Lemhi Ridge defines the eastern boundary and offers high vantage for reading the basins; Howe Peak and Massacre Mountain provide reference points in the northern section. Firebox Summit and Lemhi Pass mark major breaks in the terrain.

The Little Lost River Sinks and Big Lost River Sinks are critical features—not just for water potential but as visual landmarks that orient hunters to drainage systems. Deer Creek Pass, Firebox Summit, and Pass Creek Summit split the country into manageable hunting sections. Twentymile Rock and Middle Butte serve as secondary navigation aids across the sagebrush.

The unit's character is defined by stark elevation contrast packed into relatively tight geography. Low-elevation basins (Little Lost River Sinks, Big Lost River Sinks) anchor the country in open sagebrush and grassland; these transition abruptly into juniper-studded slopes and eventually timber-covered ridges as terrain climbs toward Lemhi Ridge and the Hawley Mountains. The Red Hills and Donkey Hills break the basin monotony with scattered rocky outcrops.

This isn't uniform terrain—it's a complex patchwork of flats, draws, and ridgelines that rewards careful glassing and punishes careless movement.

Three thousand miles of roads traverse this vast unit—a substantial network that may seem connected but is heavily focused on valley bottoms and ridgeline corridors. Forest Service roads thread through the drainages and reach high passes, providing logical staging areas and access points. This connectivity paradoxically concentrates pressure along road corridors; the complexity (8.1/10) suggests that off-road hiking penetration is limited by terrain rather than access restrictions.

Most hunters work roadsides or obvious drainages; the country rewards pushing into less-obvious basins and canyon systems away from main arteries.

Unit 51-2 occupies the high desert between the Lemhi divide and the Little Lost River drainage, spanning parts of Butte, Custer, and Lemhi counties. The northern boundary follows State Highway 33 near Little Smoky Creek and Carrie Creek; the eastern edge tracks the Lemhi divide; the southern boundary runs along Five Points Creek Road. This is a sprawling unit with minimal development—no towns within its boundaries, though Howe and Berenice sit near the margins.

The terrain spans from 4,400 feet in the basins to over 12,000 feet on ridge crests.

Water is scarce and seasonal—a fundamental constraint that shapes hunting strategy. The Little Lost River runs intermittently through the northern unit; Big Lost River drainage influences the southern basins. Reliable water depends entirely on spring location: Iron Springs, Willow Springs, Y Springs, Fallert Springs, and Magpie Springs are documented, though confirmation before the season matters enormously.

Creeks (Deer Creek, Basin Creek, Jackson Creek, Barney Creek) flow seasonally; Taylor Slough, Horse Lake, and the named reservoirs offer fallback options but aren't dependable year-round. Hunters must plan water logistics carefully or accept dry camps.

This is pronghorn country—the unit's only historically associated species. Pronghorn favor the expansive sagebrush basins at lower elevations where they glass from distance and use speed as defense. Early season means glassing from high points overlooking Little Lost River Valley, Bird Canyon, and the flats around Deer Flats and Morgans Pasture.

The maze of canyons (Jumpoff, Basinger, Van Dorn, Cub) provides cover and water access that concentrates animals during midday. Success hinges on patience: locate water sources, glass thoroughly from ridges at dawn and dusk, then stalk into basins accepting that terrain complexity means long approaches and frequent repositioning.