Unit 25A

Key landmarks anchor navigation in this featureless terrain. The Davidson Mountains and Coleen Hills provide visible reference points for orientation across rolling country. Windy Glacier marks prominent terrain in the western section.

Major passes—Carter, Woodland Echo, McLellan, Boatman—define practical travel corridors through ridge systems. Sheenjek Lake, Khaali Lake, and Blackfish Lake serve as reliable water and navigation references. The Chandalar Shelf and river valleys like the West Fork Chandalar provide low-ground travel corridors.

Trout Creek and Sammy Creek offer water sources and drainage-bottom travel routes. These scattered features become critical in country where GPS and map work are essential skills.

The unit's character is defined by low-elevation tundra and barren ridges. Most terrain sits below 5,000 feet, creating a landscape of rolling tundra slopes, sparse willow thickets in drainages, and exposed rock ridges. Higher elevations host sparse alpine vegetation and permanent snowfields, particularly around Windy Glacier and the Davidson Mountains.

Forest coverage is minimal—tundra and tussock grass dominate, with scattered spruce limited to protected valley bottoms and south-facing slopes. The sparse timber means open glassing and exposed travel, but also limited shelter and browse concentration. Habitat transitions seasonally as caribou, moose, and sheep respond to snow depth and vegetation availability.

Access is the defining constraint. Only 35 miles of road exist across 21,295 square miles—a density of 0.0 practical road access. The few miles that exist concentrate near populated places; most of the unit requires backcountry travel.

This extreme isolation means minimal pressure but maximal logistics demands. No staging areas exist within the unit; hunters access via bush plane to remote strips or hike in from periphery communities. Self-sufficiency is mandatory—resupply is impossible mid-hunt.

The landscape's scale, combined with limited access routes, means hunters spread thin across vast terrain. Weather and logistics, not crowding, are the real challenges.

Unit 25A sprawls across northeastern Alaska's Brooks Range foothills, encompassing over 21,000 square miles of arctic landscape. The unit centers on the Chandalar drainage system and extends across rolling tundra and exposed ridgelines typical of the area's transition between boreal forest and true arctic tundra. Small communities—Arctic Village, Christian, Chandalar—dot the periphery but represent minimal development within the unit itself.

The terrain transitions from lower river valleys rising to exposed, windswept ridges and scattered mountain clusters. Public land comprises the vast majority, offering unrestricted backcountry access once you reach the country.

The Chandalar system and its tributaries—West Fork Chandalar River, Rosalie Creek, Trilby Creek, Sammy Creek, Beaucoup Creek—form the unit's primary drainage network. Multiple named creeks provide reliable water sources throughout drainages, critical in tundra country where surface water is essential. Lakes scatter across the tundra: Sheenjek Lake, Blackfish Lake, Khaali Lake, and several others offer both water and navigation waypoints.

Glacier Spring indicates reliable water even in higher elevations. The moderate water rating reflects this network's distribution, though tundra terrain means water is seasonally variable—abundant during snowmelt, more scattered in late season. Drainages funnel wildlife movement and provide natural travel corridors.

Unit 25A hosts diverse subarctic game: caribou, moose, Dall sheep, mountain goats, brown bears, and wolves occupy different elevations and seasonal ranges. Caribou migrate through tundra and higher ridges—hunt elevated plateaus and passes during migration windows. Moose concentrate in willow drainages and river bottoms; the Chandalar system and tributary valleys hold resident populations.

Dall sheep prefer exposed ridges and higher terrain; the Davidson Mountains and surrounding ridgelines are primary habitat. Mountain goat habitat aligns with steeper terrain and cliffs, though sparse relative to more southern ranges. Brown bears hunt salmon drainages in season and use tundra slopes year-round.

Success requires understanding seasonal movement, terrain navigation, and self-rescue. Plan hunts around water access and weather windows.