Slopes are 8 to 50 percent. Elevations are 5,400 to 6,600 feet. The climate is cool and arid. These are the Kyler, Thike and Weepah series. Kyler soils are carbonatic and are over limestone.
Thike soils have an argillic horizon and are over hard granite.
Weepah soils are skeletal and have an aridic moisture regime that borders xeric. The present vegetation is mainly spiny menodora, shadscale, Anderson wolfberry, Nevada ephedra and Indian ricegrass. These soils are of small extent.