Unit 286, Nevada

The Las Vegas Range runs roughly north-south with two primary ridgelines exhibiting Basin and Range Province block-faulted geology. Terrain varies from relatively level, unbroken bajadas (alluvial fans) on the valley floors to steep, rocky canyons, broken ledges, and rugged limestone cliffs at higher elevations. Elevations range from approximately 2,800 feet at the Corn Creek Field Station on the valley floor to 6,937 feet at Gass Peak, the highest named summit in the range. The eastern edge of the unit borders U.S. Route 93, which runs between the Las Vegas Range and the Arrow Canyon Range to the east. The southeast portion near Gunsight is lower and more accessible.

The unit is almost entirely within the USFWS Desert National Wildlife Refuge, with a small southeastern portion in the joint-use Nevada Test and Training Range (NTTR, administered by Nellis Air Force Base and USFWS), and a narrow BLM strip along the eastern boundary near U.S. Route 93. There is no private land of significance. Primary western access is via Corn Creek Road (paved, approximately 4 miles east from U.S. Route 95 at mile marker 101, approximately 23 miles north of Las Vegas) to the Corn Creek Field Station and Visitor Center. The refuge gate on Corn Creek Road opens at approximately 4:00 a.m. and closes at sunset. From Corn Creek, Mormon Well Road (high-clearance dirt road, approximately 47 miles connecting to U.S. Route 93) provides the main backcountry route through the refuge. Gass Peak Road branches off Mormon Well Road and runs into the Las Vegas Range; 4WD is required beyond Quail Springs Road, approximately 9 miles past the Mormon Well Road junction. Key named roads within the unit vicinity include Joe May Road, Cow Camp Road, Hidden Forest Road, and Dead Horse Road (4WD only). Eastern access to the unit's Gunsight area is available from U.S. Route 93 at mile marker 80 (Mormon Well Road junction). All vehicles must be street-legal; off-highway vehicles (OHVs) are prohibited throughout the refuge. Service roads are closed to private vehicles. Primitive camping is permitted throughout the backcountry; Desert Pass Campground (fee-free, 6 sites, ponderosa pine setting) is located 28 miles from Corn Creek. Hunters must contact USFWS DNWR prior to hunting regarding current access, camping restrictions, and any seasonal closures: (702) 879-6110. Cell service is extremely limited throughout the unit.

Vegetation is strongly elevation-zoned. Lower valley floors and bajadas (below roughly 3,500 ft) are dominated by creosote bush and white bursage typical of the Mojave Desert. Mid-elevations (approximately 3,500–5,500 ft) transition through Joshua tree woodland, blackbrush scrub, and Mojave mixed scrub with cacti and yucca. Upper slopes (5,500–7,000 ft) support pinyon-juniper woodland, the dominant plant community across the higher elevations of the range. Near the highest ridges and in sheltered drainages there are small pockets of ponderosa pine. Riparian and spring-associated vegetation occurs at developed and natural water sources including Quail Spring. Overall range conditions have been stressed by multi-year drought beginning around 2018, with below-average precipitation at Corn Creek Field Station in recent years.

Desert bighorn sheep (Nelson subspecies) are the primary focus of the Desert National Wildlife Refuge and the dominant game species of Unit 286. The Las Vegas Range historically supported a year-round population after water developments were built, eliminating seasonal migration between the Sheep Range and Desert Range. The 2023 aerial survey classified 70 bighorn sheep with a ratio of 24 rams per 100 ewes and 18 lambs per 100 ewes; the 2025 NDOW population model estimates approximately 100 animals. The population declined significantly after 2018 due to Mycoplasma ovipneumoniae (M. ovi) detection and multi-year severe drought; emergency water hauls were required in 2025 at the New Black Top water development. Mule deer are present in low numbers in the range but no dedicated hunt tags are issued for Unit 286. Mountain lions are present. The refuge supports over 320 bird species and 52 mammal species refugewide. Coyotes and common Mojave desert fauna are present throughout. The Corn Creek riparian area at the western trailhead supports diverse migratory songbirds. No elk, pronghorn, or other huntable ungulates have established huntable populations within Unit 286.