Bryce Johnson (left), DJ Evans (center) and Ben Evans, Cub Scout Pack 140 members, plant a tree during a National Public Lands Day event at Pine Meadows Campground, Cottage Grove Lake, southeast of Eugene, Oregon, Sept. 24, 2016. This year, the U.S. Army Corps of Engineers will hold a similar event at Schwarz Campground, below Dorena Dam. For their efforts, volunteers can camp for free.