Granville, Tenn. (Sept. 11, 2012) – Upkeep of recreation areas, campgrounds and hiking trails often depends on volunteers who care deeply about the nation’s natural resources and want them to be there for their children and generations to come. The U.S. Army Corps of Engineers Nashville District’s EAGLE Class learned that important lesson of volunteerism today when they rolled up their sleeves and got their boots dirty at one of Cordell Hull Lake’s primitive horse trail campgrounds.