The Forest Service says Herman Creek Trailhead will be temporarily closed for several weeks beginning Tuesday while crews work on removing hazardous trees with laminated root rot within the Herman Creek Horse Camp. Laminated root rot is the most damaging root disease of forest trees in Oregon and Washington.  Infected trees may appear outwardly healthy but are often unstable and can fall without warning.  The removal of hazard trees infected with laminated root rot is necessary for the re-opening of the Herman Creek campground and to prevent the spread of root rot to adjacent areas.  The Herman Creek Trailhead is adjacent to the Horse Camp and provides access to the Mark 0. Hatfield Wilderness, Pacific Crest National Scenic Trail, Herman Creek Trail, Gorge 400 Trail, and several additional National Forest System trails.