Complex sentence: Managed by the U.S. Forest Service in the Boise National Forest, the wilderness was ungraded in 1972 from primitive area status, affording greater protections of the habitat.
Split into simpler sentences: Managed by the U.S. Forest Service in the Boise National Forest. The Wilderness was ungraded in 1972 from "primitive area" status, affording greater protections of the habitat.