Unit 104 covers the southern Ruby Mountains and the country south toward Diamond Valley. Elevations span from about 5,500 feet in the valleys to over 10,500 feet on the higher Ruby peaks. The country is classic Ruby Mountain terrain on the high end—glaciated cirques, talus, and alpine ridge—dropping through aspen and limber pine into mahogany and pinon-juniper on the flanks. The southern Rubies are slightly less dramatic than the heart of the range but still produce serious vertical relief and excellent habitat. Humboldt-Toiyabe NF on the high country, BLM on the flanks, with the Ruby Lake National Wildlife Refuge on the eastern margin (separate regs). Forest roads from Harrison Pass and the Ruby Valley side provide access; Harrison Pass Road is the paved divide crossing. Elko and Eureka are the closest service towns, both an hour-plus away. Cell service is essentially nonexistent. Mule deer hunting is the calling card and the southern Rubies hold mature bucks. The unit gets less pressure than the celebrity north end. Late season weather is genuine winter at elevation—plan accordingly.