The Wallowas/Seven Devils Mountains ecoregion consists of deeply dissected mountains in the Wallowas and Seven Devil ranges. It occupies the mid-elevation zone between the Subalpine-Alpine Zone and the Continental Zone Foothills, at an elevation of 3,000 to 9,200 feet (914 to 2,804 m). Perennial streams following fault lines have eroded deep canyons. The character of the region's xeric forest varies between moister maritime-influenced and drier continental areas, particularly in the diversity and extent of the shrub understory. The region is dominated by Western ponderosa pine, lodgepole pine, Douglas-fir, and grand fir, with western larch, ninebark, snowberry, Rocky Mountain maple, serviceberry, mountain big sagebrush, low sagebrush, big huckleberry, grouse huckleberry, twinflower, prince's pine, elk sedge, and pinegrass. Higher elevations support subalpine fir. The region covers in Oregon and in Idaho, containing parts of the Wallowa-Whitman, Nez Perce, and Payette national forests.