Unit 022 covers a vast swath of high desert in northwestern Nevada including the Black Rock Desert, the High Rock Canyon country, and the Calico Mountains. Elevations run from about 4,000 feet on the playa to over 8,500 feet in the Calicos and the Granite Range. This is the emptiest country in the lower 48—Black Rock playa is a 200-square-mile dry lakebed, surrounded by basalt rim country, hot springs, and isolated mountain ranges. Vegetation is sparse: greasewood and saltgrass on the alkali flats, sagebrush and bunchgrass on the benches, and scattered juniper-mahogany on the upper slopes. Almost entirely BLM with the High Rock and Black Rock Desert National Conservation Area covering the heart. Roads are dirt, often deteriorated by Burning Man traffic and seasonal flooding. State Route 447 from Gerlach is the main paved access; everything else is gravel or two-track. Gerlach is the tiny outpost—gas, a couple of bars, and a small store. Winnemucca (about 90 minutes east) is the real supply run. Cell service is essentially nonexistent. Pronghorn are the primary game, with mule deer in the timbered upper ranges and California bighorn sheep on the cliff bands. The country is genuinely dangerous—if you break down out here, you're on your own. Carry extra water, fuel, and a sat communicator. The clay flats turn lethal when wet.