About 33 miles north of Durango on Coal Bank Pass, approximately 1,100 feet west and 2,700 feet north of the southeast corner of Sec. Mean annual soil temperature ranges from 34 to 38 degrees F., and mean summer soil temperature ranges from 40 to 46 degrees F. with an 0 horizon. Depth to bedrock ranges from 6 to 20 inches. Rock fragments range from 35 to 75 percent in the particle-size control section and are mostly gravel and cobble size. Clay content ranges from 10 to 27 percent.
Reaction ranges from neutral through moderately acid.
Merino and Pendergrass soils are dry in some part of the moisture control section at some time when the soil temperature is above 41 degrees F. Wheelerpek soils are dry in all parts of the moisture control section for at least 45 consecutive days following the summer solstice. Sig soils are on mountain side slopes and on benches. Slopes range from 5 to 60 percent or more. The soil formed in residual parent material weathered from granite, schist, or sandstone. Elevation ranges from 8,500 feet to 11,500 feet.