Unit 30 Aspen Mountain (Area 30)
High-desert aspen and juniper plateau south of Rock Springs stitched into the Union Pacific checkerboard
Red Desert / Checkerboard · Last reviewed 2026-07-12
Area
553
sq mi
Public land
55%
approx.
Elevation
6,200–8,900
feet
Motorized
moderate
access
Overview
Area 30 is the Aspen Mountain country immediately south of Rock Springs in Sweetwater County, a high sagebrush-and-juniper plateau that climbs to aspen pockets and rimrock above 8,000 feet on the northern rim of the Red Desert. It is primarily a mule deer unit, part of the broad southwest-Wyoming desert deer country, with abundant pronghorn on the flats and elk in the higher juniper and mountain-shrub breaks. The signature access problem is the Union Pacific land-grant checkerboard: alternating square miles of public and private that lace the whole area and make legal access and corner-crossing the defining challenge.
Terrain
Rolling high-desert benches and sage basins rising to a juniper-and-aspen plateau with rimrock rims, draws and scattered mountain-shrub pockets on Aspen Mountain and the ridges south toward Little Mountain.
Cover: Sagebrush, greasewood and grass on the flats, dense juniper and mountain mahogany on the slopes, and aspen stands and mixed shrub in the higher, wetter pockets.
Landmarks: Aspen Mountain · Rock Springs · White Mountain · Little Mountain / Pine Mountain (south) · Killpecker / Red Desert edge
Access
Roughly half public on paper, but this is core Union Pacific checkerboard: public and private sections alternate mile by mile, so much of the BLM ground touches at the corners only. Corner-crossing is legally contested and blocked-in public sections are everywhere. Map ownership section by section, use large contiguous BLM blocks and established public access, and do not assume you can legally reach a public square just because it shows on the map.
Managers: BLM, private ranch, WY state trust
Access points: Aspen Mountain Road / South Side Belt Route out of Rock Springs · BLM roads off US 191 south toward Little Mountain · Interstate 80 exits at Rock Springs · County and BLM two-tracks across the plateau
Species notes
Mule Deer
common qualityThe core draw: desert mule deer that summer on the juniper-and-aspen high country and use the plateau as part of the broader southwest-Wyoming migration; genuine quality bucks come off the roughest, least-accessible pockets.
- →Glass juniper heads, aspen pockets and rimrock draws at dawn and dusk
- →Hunt the high, rough breaks where checkerboard access thins the pressure
- →Time later hunts to catch bucks moving with early snow
Pronghorn
abundant qualityExcellent Red Desert antelope on the sage flats and benches surrounding the mountain; high densities and strong buck quality where legal access exists.
- →Glass sage basins from high ground early
- →Focus water sources and reservoirs in dry stretches
- →Locate bucks by vehicle, then stalk on contiguous public
Rocky Mountain Elk
limited opportunityElk use the higher juniper, aspen and mountain-shrub breaks on and south of Aspen Mountain toward Little Mountain; scattered but present, and lightly pressured in the roughest cover.
- →Hunt the juniper-and-aspen benches at the top of the plateau
- →Glass into the deeper draws at first light
- →Work the transition to Little/Pine Mountain cover to the south
Pro tips
- →Study the checkerboard closely and build routes that stay on contiguous public; corner-crossing here is legally risky
- →The best bucks hold in the roughest juniper and rimrock pockets that access problems keep lightly hunted
- →Carry plenty of water and watch the weather; wet clay can strand a truck on the plateau
- →Expect wild horses across the area; they are protected and not to be disturbed
- →Combine a plateau deer hunt with abundant flats pronghorn for a strong two-species trip
Watch out for
- !Union Pacific checkerboard: alternating public/private sections and contested corner-crossing throughout
- !Landlocked BLM and state squares that look huntable on a map but have no legal access
- !Slick clay roads and hard-blowing wind after storms
- !Protected wild horses and active energy-development traffic in places
Logistics
Rock Springs sits right at the north edge of the unit and covers fuel, lodging, groceries, gear and processing, with Green River just west, both on Interstate 80. Roads range from the paved Aspen Mountain route to rough desert two-tracks that turn to slick clay when wet. Cell service is good near town and fades fast on the plateau and desert.
Nearest towns: Rock Springs, Green River, Reliance
Seasons & regulations
This page carries no season dates or regulations. Get current rules from the official Wyoming sources:
Research sources: WGFD 2024 Deer Hunt Area Maps · WyoFile - Wyoming Checkerboard Land Ownership · BLM White Mountain Herd Management Area (Rock Springs)
FAQ
- How big is Unit 30 in Wyoming?
- Unit 30 (Aspen Mountain (Area 30)) covers about 553 square miles, ranging from roughly 6,200 to 8,900 feet in elevation. Area is computed from the unit boundary polygon.
- How much public land is in Unit 30?
- Approximately 55% of the unit is public land. Primary managers: BLM, private ranch, WY state trust. Always verify ownership boundaries on the ground.
- What species does the catalog list for Unit 30?
- Mule Deer, Pronghorn, Rocky Mountain Elk. For seasons, tags, and regulations, use the official Wyoming agency resources linked on this page — this page carries no regulatory information.
Put Unit 30 on your map.
Boundary lines, public/private ownership, topo, and offline maps for this unit — in Baseline Maps, free for 14 days.