Unit S04

Guanella Pass and the high ridgelines radiating from it serve as major navigation anchors and access corridors. Mount Logan, Geneva Mountain, and Spearhead Mountain are prominent summits useful for orientation and glassing distant slopes. Square Top Lakes, Beartrack Lakes, and Roosevelt Lakes offer alpine water sources and serve as camp reference points.

Smelter Basin provides a large, recognizable alpine valley system. Pegmatite Points and Chimney Rock are distinctive features visible from many angles. These landmarks help hunters navigate the complex, high-country maze of ridges and basins.

The unit spans nearly 7,000 feet of elevation, rising from 7,060 feet in lower valleys to above 13,700 feet on alpine ridges. Most terrain sits above 9,500 feet—this is subalpine forest transitioning to exposed alpine meadow, tundra, and rocky peaks. Dense lodgepole and spruce-fir forest covers lower and mid-elevations; as you climb above 11,000 feet, timber thins dramatically, giving way to open parks, krummholz, and rocky alpine terrain ideal for bighorn sheep.

The rolling topography at lower elevations steepens considerably in upper basins and along ridgecrests where sheep concentrate.

A connected road network including Guanella Pass, CR 73, and forest service roads provides multiple entry points from nearby communities. This proximity to the Front Range population corridor creates predictable pressure at accessible trailheads and lower passes. However, the high elevation, steep terrain above trailheads, and limited water discourage casual hunting.

Experienced hunters willing to push into the highest basins and ridges will encounter significantly fewer competitors. Early season and late access are less crowded; peak rifle season draws concentrated pressure at obvious access points and lower elevation camps.

S04 sits in the Front Range high country of Clear Creek, Park, and Jefferson counties, anchored by the Continental Divide on its western boundary. The unit extends from the North Fork of South Platte River on the south to USFS Trail 603 and the Pike National Forest boundary on the north. U.S. Highway 285 and CR 73 define eastern edges, creating a moderately-sized alpine zone directly accessible from Grant and surrounding communities.

This is relatively close-in high country compared to remote wilderness alternatives, yet the terrain above treeline is genuinely complex and elevation-dependent.

Water is genuinely limited above treeline—this is arid alpine country. Named lakes (Mud, Roosevelt, Beartrack, Square Top, Josephine, Shelf, Geneva) are critical reference points and water sources, but they may be frozen or inaccessible depending on season and snow cover. Below 10,000 feet, creeks like Chicken, Cliff, Willow, Green, and Blue Creek provide more reliable water.

The North Fork of South Platte River borders the unit on the south. Hunters must verify water sources and plan routes accordingly; relying on snowmelt or lakes alone can be risky. Carrying capacity may be necessary in dry periods.

S04 is home to bighorn sheep and some elk at lower elevations, but this is fundamentally sheep country. Sheep in this unit are found in alpine and subalpine zones above 10,500 feet, favoring exposed ridges, alpine parks, and rocky outcrops where they can see and escape threats. Hunting requires extensive glassing from distance—high vantage points above 12,000 feet offer the best optics for scanning adjacent drainages and basins.

Route planning must account for elevation gain, limited water, and exposed terrain. Early season (if applicable) focuses on high basins and cirques; later season may push sheep lower into transitional zones as snow deepens. Physical conditioning is essential; this is not easy terrain.