Unit 330

The Ruby Range and Greenhorn Range form the unit's spine, with Benson Peak and Sawtooth Mountain providing prominent navigation anchors. The Centennial Divide runs through the unit as a major ridge system offering both terrain shelter and glassing vantage points. Key drainages include Rock Creek and Trout Creek for navigation corridors and water potential.

Ledoford Pass and Antone Pass mark saddles useful for accessing high country, while named lakes like Twin Lakes and Haypress Lakes provide destination points and water sources in the high basins.

Terrain rises from mid-valley floors around 5,000 feet to alpine summits exceeding 10,500 feet, with the majority of huntable terrain concentrated in the 8,000-10,500-foot band. Open ridges and high basins dominate the upper elevations, with sparse timber scattered through draws and sheltered aspects. The Centennial Divide and associated ridge systems create natural sheep habitat with extensive glassing terrain and escape routes into steep canyons.

Lower elevations feature rolling foothill country with scattered timber giving way to true alpine as elevation increases, creating distinct microhabitats hunters can use to predict sheep movement.

Fair road access via forest service roads and maintained forest roads reaches staging areas around the unit's perimeter, particularly from Twin Bridges and Ennis corridors. However, road density drops dramatically once you leave main drainage access, forcing hunters into backcountry navigation. The complexity of the terrain (8.3/10) naturally limits pressure in the interior, as sheep hunting demands both physical conditioning and route-finding ability.

Most access pressure concentrates near maintained trailheads and lower drainages; the ridge systems and high basins receive less traffic, rewarding hunters willing to cover significant distance and elevation gain.

Unit 330 encompasses the country between Twin Bridges and Ennis in southwestern Montana, bounded by State Highways 41, 287, and 41 again, forming a rough triangle across Madison and Beaverhead Counties. The unit spans from the Dillon area southeast to Ennis, covering substantial acreage of the Ruby and Greenhorn Range system. This is classic high-elevation sheep country with significant vertical relief and rugged terrain that demands careful navigation and physical conditioning.

The boundaries follow logical highway corridors and established forest service roads, making access straightforward but the interior terrain decidedly steep and complex.

Water is genuinely limited in the high alpine where sheep spend summer months, requiring hunters to plan around reliable springs and identified lakes. Fitzpatrick Spring, Twin Springs, and Eagle Spring are scattered through the unit but require knowledge of their locations. Rock Creek, Trout Creek, and Crittenden Creek offer perennial flow in lower elevations but may be far from active sheep ranges.

The Ruby River Reservoir and smaller impoundments sit lower in the unit, useful for base camp logistics but not directly relevant to high-country sheep hunting. High-country lakes like Haypress Lakes, Twin Lakes, and Heart Lake become critical water sources during peak hunting season.

Desert bighorn sheep are the target species, occupying the high ridges, cliff faces, and alpine basins above 9,000 feet. Hunt from early season through late fall, focusing on the transition periods when sheep move between summer and fall ranges. Glass extensively from vantage points along the Centennial Divide and major ridge systems where you can cover multiple basins simultaneously.

Approach with wind awareness since sheep rely heavily on scent detection. Plan water carries for high-country camps near identified springs and lakes. Expect to cover 10-15 miles daily with significant elevation gain; the terrain rewards persistence and careful stalk execution more than luck.