Altus Lake and Quartz Mountain in southwest Oklahoma are featured in this west-looking, low-oblique photograph. Fed and drained by the north fork of the Red River, Altus Lake and its dam are used for recreation, flood control, and hydroelectric power. Some mining occurs in and around Quartz Mountain, south of Altus Lake. Viewing clockwise from the lake are condensed agriculture field patterns in the valley of the north fork of the Red River; Hobart, barely discernible as a gray smudge; the western portions of Tom Steed Lake; and the Salt Fork of Red River (upper left).