EAST BLACK HILLS. The East Black Hills are a mile east of the Black Hills and twenty miles northeast of the Persimmon Gap Ranger Station in east central Brewster County (centered at 29°49' N, 102°57' W). The hills, at an elevation of 3,365 feet above sea level, rise 525 feet above Dove Mountain Road a half mile to the south. Soils in the hills are generally shallow and stony and support oaks, juniper, and some mesquite.