Colville National Forest Sullivan Lake Tucked away in the hills east of Metaline Falls lies Sullivan Lake, a haven for visitors who relax at the area 's summer cabins or Forest Service campgrounds.
People share the lake and the mountains that surround it with birds and wildlife.
Loons, great blue heron, rednecked grebes, and mergansers feed and nest on the lake. Deer and bear roam the woods nearby. Bighorn sheep probably ranged on Hall Mountain naturally until about 1900, when disease or unregulated hunting eliminated them. In 1972, the Washington Department of Wildlife released eighteen Rocky Mountain bighorns in an effort to re-establish a herd. The department now manages about sixty sheep near Sullivan Lake as a source of transplants to other areas in Washington.