Joyce Kilmer-Slickrock Wilderness, created in 1975, covers 17,394 acres (70 km2) in the Nantahala National Forest in western North Carolina and the Cherokee National Forest in eastern Tennessee, in the watersheds of the Slickrock and Little Santeetlah Creeks. It is named after Joyce Kilmer, author of "Trees." The Little Santeetlah and Slickrock watersheds contain 5,926 acres (23.98 km2) of old growth forest, one of the largest tracts in the United States east of the Mississippi River.