Elevation is 4000 to 6,700 feet. The frost-free season is 110 to 130 days. These are the Sunup and the competing Bowbac and Hiland soils. Sunup soils are shallow, loamy-skeletal and do not have an argillic horizon. These soils are used mainly for livestock grazing and wildlife habitat.
Native vegetation is mainly rhizomatous wheatgrass, needleandthread, and big sagebrush.